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-rw-r--r--arch/powerpc/platforms/44x/44x.h12
-rw-r--r--arch/powerpc/platforms/44x/Kconfig329
-rw-r--r--arch/powerpc/platforms/44x/Makefile14
-rw-r--r--arch/powerpc/platforms/44x/canyonlands.c118
-rw-r--r--arch/powerpc/platforms/44x/ebony.c64
-rw-r--r--arch/powerpc/platforms/44x/fsp2.c317
-rw-r--r--arch/powerpc/platforms/44x/fsp2.h272
-rw-r--r--arch/powerpc/platforms/44x/idle.c54
-rw-r--r--arch/powerpc/platforms/44x/iss4xx.c162
-rw-r--r--arch/powerpc/platforms/44x/machine_check.c87
-rw-r--r--arch/powerpc/platforms/44x/misc_44x.S41
-rw-r--r--arch/powerpc/platforms/44x/ppc44x_simple.c87
-rw-r--r--arch/powerpc/platforms/44x/ppc476.c293
-rw-r--r--arch/powerpc/platforms/44x/ppc476_modules.lds15
-rw-r--r--arch/powerpc/platforms/44x/sam440ep.c73
-rw-r--r--arch/powerpc/platforms/44x/warp.c311
16 files changed, 2249 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/44x/44x.h b/arch/powerpc/platforms/44x/44x.h
new file mode 100644
index 000000000..0e912a6a0
--- /dev/null
+++ b/arch/powerpc/platforms/44x/44x.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __POWERPC_PLATFORMS_44X_44X_H
+#define __POWERPC_PLATFORMS_44X_44X_H
+
+extern u8 as1_readb(volatile u8 __iomem *addr);
+extern void as1_writeb(u8 data, volatile u8 __iomem *addr);
+
+#define GPIO0_OSRH 0xC
+#define GPIO0_TSRH 0x14
+#define GPIO0_ISR1H 0x34
+
+#endif /* __POWERPC_PLATFORMS_44X_44X_H */
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
new file mode 100644
index 000000000..9bc852c7e
--- /dev/null
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -0,0 +1,329 @@
+# SPDX-License-Identifier: GPL-2.0
+config PPC_47x
+ bool "Support for 47x variant"
+ depends on 44x
+ select MPIC
+ help
+ This option enables support for the 47x family of processors and is
+ not currently compatible with other 44x or 46x varients
+
+config BAMBOO
+ bool "Bamboo"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 440EP
+ select FORCE_PCI
+ help
+ This option enables support for the IBM PPC440EP evaluation board.
+
+config BLUESTONE
+ bool "Bluestone"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select APM821xx
+ select FORCE_PCI
+ select PCI_MSI
+ select PPC4xx_MSI
+ select PPC4xx_PCI_EXPRESS
+ select IBM_EMAC_RGMII if IBM_EMAC
+ help
+ This option enables support for the APM APM821xx Evaluation board.
+
+config EBONY
+ bool "Ebony"
+ depends on 44x
+ default y
+ select 440GP
+ select FORCE_PCI
+ select OF_RTC
+ help
+ This option enables support for the IBM PPC440GP evaluation board.
+
+config SAM440EP
+ bool "Sam440ep"
+ depends on 44x
+ select 440EP
+ select FORCE_PCI
+ help
+ This option enables support for the ACube Sam440ep board.
+
+config SEQUOIA
+ bool "Sequoia"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 440EPX
+ help
+ This option enables support for the AMCC PPC440EPX evaluation board.
+
+config TAISHAN
+ bool "Taishan"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 440GX
+ select FORCE_PCI
+ help
+ This option enables support for the AMCC PPC440GX "Taishan"
+ evaluation board.
+
+config KATMAI
+ bool "Katmai"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 440SPe
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ select PCI_MSI
+ select PPC4xx_MSI
+ help
+ This option enables support for the AMCC PPC440SPe evaluation board.
+
+config RAINIER
+ bool "Rainier"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 440GRX
+ select FORCE_PCI
+ help
+ This option enables support for the AMCC PPC440GRX evaluation board.
+
+config WARP
+ bool "PIKA Warp"
+ depends on 44x
+ select 440EP
+ help
+ This option enables support for the PIKA Warp(tm) Appliance. The Warp
+ is a small computer replacement with up to 9 ports of FXO/FXS plus VOIP
+ stations and trunks.
+
+ See http://www.pikatechnologies.com/ and follow the "PIKA for Computer
+ Telephony Developers" link for more information.
+
+config ARCHES
+ bool "Arches"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 460EX # Odd since it uses 460GT but the effects are the same
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ help
+ This option enables support for the AMCC Dual PPC460GT evaluation board.
+
+config CANYONLANDS
+ bool "Canyonlands"
+ depends on 44x
+ select 460EX
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ select PCI_MSI
+ select PPC4xx_MSI
+ select IBM_EMAC_RGMII if IBM_EMAC
+ select IBM_EMAC_ZMII if IBM_EMAC
+ help
+ This option enables support for the AMCC PPC460EX evaluation board.
+
+config GLACIER
+ bool "Glacier"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 460EX # Odd since it uses 460GT but the effects are the same
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ select IBM_EMAC_RGMII if IBM_EMAC
+ select IBM_EMAC_ZMII if IBM_EMAC
+ help
+ This option enables support for the AMCC PPC460GT evaluation board.
+
+config REDWOOD
+ bool "Redwood"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 460SX
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ select PCI_MSI
+ select PPC4xx_MSI
+ help
+ This option enables support for the AMCC PPC460SX Redwood board.
+
+config EIGER
+ bool "Eiger"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 460SX
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ select IBM_EMAC_RGMII if IBM_EMAC
+ help
+ This option enables support for the AMCC PPC460SX evaluation board.
+
+config YOSEMITE
+ bool "Yosemite"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 440EP
+ select FORCE_PCI
+ help
+ This option enables support for the AMCC PPC440EP evaluation board.
+
+config ISS4xx
+ bool "ISS 4xx Simulator"
+ depends on 44x
+ select 440GP if 44x && !PPC_47x
+ select PPC_FPU
+ select OF_RTC
+ help
+ This option enables support for the IBM ISS simulation environment
+
+config CURRITUCK
+ bool "IBM Currituck (476fpe) Support"
+ depends on PPC_47x
+ select I2C
+ select SWIOTLB
+ select 476FPE
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ help
+ This option enables support for the IBM Currituck (476fpe) evaluation board
+
+config FSP2
+ bool "IBM FSP2 (476fpe) Support"
+ depends on PPC_47x
+ select 476FPE
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select IBM_EMAC_RGMII if IBM_EMAC
+ select COMMON_CLK
+ select DEFAULT_UIMAGE
+ help
+ This option enables support for the IBM FSP2 (476fpe) board
+
+config AKEBONO
+ bool "IBM Akebono (476gtr) Support"
+ depends on PPC_47x
+ select SWIOTLB
+ select 476FPE
+ select PPC4xx_PCI_EXPRESS
+ select FORCE_PCI
+ select PCI_MSI
+ select PPC4xx_HSTA_MSI
+ select I2C
+ select I2C_IBM_IIC
+ select NETDEVICES
+ select ETHERNET
+ select NET_VENDOR_IBM
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select USB if USB_SUPPORT
+ select USB_OHCI_HCD_PLATFORM if USB_OHCI_HCD
+ select USB_EHCI_HCD_PLATFORM if USB_EHCI_HCD
+ select MMC_SDHCI
+ select MMC_SDHCI_PLTFM
+ select ATA
+ select SATA_AHCI_PLATFORM
+ help
+ This option enables support for the IBM Akebono (476gtr) evaluation board
+
+
+config ICON
+ bool "Icon"
+ depends on 44x
+ select PPC44x_SIMPLE
+ select 440SPe
+ select FORCE_PCI
+ select PPC4xx_PCI_EXPRESS
+ help
+ This option enables support for the AMCC PPC440SPe evaluation board.
+
+config PPC44x_SIMPLE
+ bool "Simple PowerPC 44x board support"
+ depends on 44x
+ help
+ This option enables the simple PowerPC 44x platform support.
+
+config PPC4xx_GPIO
+ bool "PPC4xx GPIO support"
+ depends on 44x
+ select GPIOLIB
+ help
+ Enable gpiolib support for ppc440 based boards
+
+# 44x specific CPU modules, selected based on the board above.
+config 440EP
+ bool
+ select PPC_FPU
+ select IBM440EP_ERR42
+ select IBM_EMAC_ZMII if IBM_EMAC
+
+config 440EPX
+ bool
+ select PPC_FPU
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select IBM_EMAC_RGMII if IBM_EMAC
+ select IBM_EMAC_ZMII if IBM_EMAC
+ select USB_EHCI_BIG_ENDIAN_MMIO
+ select USB_EHCI_BIG_ENDIAN_DESC
+
+config 440GRX
+ bool
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select IBM_EMAC_RGMII if IBM_EMAC
+ select IBM_EMAC_ZMII if IBM_EMAC
+
+config 440GP
+ bool
+ select IBM_EMAC_ZMII if IBM_EMAC
+
+config 440GX
+ bool
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select IBM_EMAC_RGMII if IBM_EMAC
+ select IBM_EMAC_ZMII if IBM_EMAC #test only
+ select IBM_EMAC_TAH if IBM_EMAC #test only
+
+config 440SP
+ bool
+
+config 440SPe
+ bool
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+
+config 460EX
+ bool
+ select PPC_FPU
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select IBM_EMAC_TAH if IBM_EMAC
+
+config 460SX
+ bool
+ select PPC_FPU
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select IBM_EMAC_RGMII if IBM_EMAC
+ select IBM_EMAC_ZMII if IBM_EMAC
+ select IBM_EMAC_TAH if IBM_EMAC
+
+config 476FPE
+ bool
+ select PPC_FPU
+
+config APM821xx
+ bool
+ select PPC_FPU
+ select IBM_EMAC_EMAC4 if IBM_EMAC
+ select IBM_EMAC_TAH if IBM_EMAC
+
+config 476FPE_ERR46
+ depends on 476FPE
+ bool "Enable linker work around for PPC476FPE errata #46"
+ help
+ This option enables a work around for an icache bug on 476
+ that can cause execution of stale instructions when falling
+ through pages (IBM errata #46). It requires a recent version
+ of binutils which supports the --ppc476-workaround option.
+
+ The work around enables the appropriate linker options and
+ ensures that all module output sections are aligned to 4K
+ page boundaries. The work around is only required when
+ building modules.
+
+# 44x errata/workaround config symbols, selected by the CPU models above
+config IBM440EP_ERR42
+ bool
+
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
new file mode 100644
index 000000000..5ba031f57
--- /dev/null
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-y += misc_44x.o machine_check.o
+ifneq ($(CONFIG_PPC4xx_CPM),y)
+obj-y += idle.o
+endif
+obj-$(CONFIG_PPC44x_SIMPLE) += ppc44x_simple.o
+obj-$(CONFIG_EBONY) += ebony.o
+obj-$(CONFIG_SAM440EP) += sam440ep.o
+obj-$(CONFIG_WARP) += warp.o
+obj-$(CONFIG_ISS4xx) += iss4xx.o
+obj-$(CONFIG_CANYONLANDS)+= canyonlands.o
+obj-$(CONFIG_CURRITUCK) += ppc476.o
+obj-$(CONFIG_AKEBONO) += ppc476.o
+obj-$(CONFIG_FSP2) += fsp2.o
diff --git a/arch/powerpc/platforms/44x/canyonlands.c b/arch/powerpc/platforms/44x/canyonlands.c
new file mode 100644
index 000000000..807968a75
--- /dev/null
+++ b/arch/powerpc/platforms/44x/canyonlands.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * This contain platform specific code for APM PPC460EX based Canyonlands
+ * board.
+ *
+ * Copyright (c) 2010, Applied Micro Circuits Corporation
+ * Author: Rupjyoti Sarmah <rsarmah@apm.com>
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc4xx.h>
+#include <asm/udbg.h>
+#include <asm/uic.h>
+#include <linux/of_platform.h>
+#include <linux/delay.h>
+#include "44x.h"
+
+#define BCSR_USB_EN 0x11
+
+static const struct of_device_id ppc460ex_of_bus[] __initconst = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ { .compatible = "simple-bus", },
+ {},
+};
+
+static int __init ppc460ex_device_probe(void)
+{
+ of_platform_bus_probe(NULL, ppc460ex_of_bus, NULL);
+
+ return 0;
+}
+machine_device_initcall(canyonlands, ppc460ex_device_probe);
+
+/* Using this code only for the Canyonlands board. */
+
+static int __init ppc460ex_probe(void)
+{
+ if (of_machine_is_compatible("amcc,canyonlands")) {
+ pci_set_flags(PCI_REASSIGN_ALL_RSRC);
+ return 1;
+ }
+ return 0;
+}
+
+/* USB PHY fixup code on Canyonlands kit. */
+
+static int __init ppc460ex_canyonlands_fixup(void)
+{
+ u8 __iomem *bcsr ;
+ void __iomem *vaddr;
+ struct device_node *np;
+ int ret = 0;
+
+ np = of_find_compatible_node(NULL, NULL, "amcc,ppc460ex-bcsr");
+ if (!np) {
+ printk(KERN_ERR "failed did not find amcc, ppc460ex bcsr node\n");
+ return -ENODEV;
+ }
+
+ bcsr = of_iomap(np, 0);
+ of_node_put(np);
+
+ if (!bcsr) {
+ printk(KERN_CRIT "Could not remap bcsr\n");
+ ret = -ENODEV;
+ goto err_bcsr;
+ }
+
+ np = of_find_compatible_node(NULL, NULL, "ibm,ppc4xx-gpio");
+ if (!np) {
+ printk(KERN_ERR "failed did not find ibm,ppc4xx-gpio node\n");
+ return -ENODEV;
+ }
+
+ vaddr = of_iomap(np, 0);
+ of_node_put(np);
+
+ if (!vaddr) {
+ printk(KERN_CRIT "Could not get gpio node address\n");
+ ret = -ENODEV;
+ goto err_gpio;
+ }
+ /* Disable USB, through the BCSR7 bits */
+ setbits8(&bcsr[7], BCSR_USB_EN);
+
+ /* Wait for a while after reset */
+ msleep(100);
+
+ /* Enable USB here */
+ clrbits8(&bcsr[7], BCSR_USB_EN);
+
+ /*
+ * Configure multiplexed gpio16 and gpio19 as alternate1 output
+ * source after USB reset. In this configuration gpio16 will be
+ * USB2HStop and gpio19 will be USB2DStop. For more details refer to
+ * table 34-7 of PPC460EX user manual.
+ */
+ setbits32((vaddr + GPIO0_OSRH), 0x42000000);
+ setbits32((vaddr + GPIO0_TSRH), 0x42000000);
+err_gpio:
+ iounmap(vaddr);
+err_bcsr:
+ iounmap(bcsr);
+ return ret;
+}
+machine_device_initcall(canyonlands, ppc460ex_canyonlands_fixup);
+define_machine(canyonlands) {
+ .name = "Canyonlands",
+ .probe = ppc460ex_probe,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/ebony.c b/arch/powerpc/platforms/44x/ebony.c
new file mode 100644
index 000000000..0d8f202bc
--- /dev/null
+++ b/arch/powerpc/platforms/44x/ebony.c
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Ebony board specific routines
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc4xx.h>
+
+static const struct of_device_id ebony_of_bus[] __initconst = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+static int __init ebony_device_probe(void)
+{
+ of_platform_bus_probe(NULL, ebony_of_bus, NULL);
+ of_instantiate_rtc();
+
+ return 0;
+}
+machine_device_initcall(ebony, ebony_device_probe);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init ebony_probe(void)
+{
+ if (!of_machine_is_compatible("ibm,ebony"))
+ return 0;
+
+ pci_set_flags(PCI_REASSIGN_ALL_RSRC);
+
+ return 1;
+}
+
+define_machine(ebony) {
+ .name = "Ebony",
+ .probe = ebony_probe,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/fsp2.c b/arch/powerpc/platforms/44x/fsp2.c
new file mode 100644
index 000000000..823397c80
--- /dev/null
+++ b/arch/powerpc/platforms/44x/fsp2.c
@@ -0,0 +1,317 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * FSP-2 board specific routines
+ *
+ * Based on earlier code:
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+#include <asm/dcr.h>
+#include <linux/interrupt.h>
+#include <linux/of_irq.h>
+#include "fsp2.h"
+
+#define FSP2_BUS_ERR "ibm,bus-error-irq"
+#define FSP2_CMU_ERR "ibm,cmu-error-irq"
+#define FSP2_CONF_ERR "ibm,conf-error-irq"
+#define FSP2_OPBD_ERR "ibm,opbd-error-irq"
+#define FSP2_MCUE "ibm,mc-ue-irq"
+#define FSP2_RST_WRN "ibm,reset-warning-irq"
+
+static __initdata struct of_device_id fsp2_of_bus[] = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,plb6", },
+ { .compatible = "ibm,opb", },
+ {},
+};
+
+static void l2regs(void)
+{
+ pr_err("L2 Controller:\n");
+ pr_err("MCK: 0x%08x\n", mfl2(L2MCK));
+ pr_err("INT: 0x%08x\n", mfl2(L2INT));
+ pr_err("PLBSTAT0: 0x%08x\n", mfl2(L2PLBSTAT0));
+ pr_err("PLBSTAT1: 0x%08x\n", mfl2(L2PLBSTAT1));
+ pr_err("ARRSTAT0: 0x%08x\n", mfl2(L2ARRSTAT0));
+ pr_err("ARRSTAT1: 0x%08x\n", mfl2(L2ARRSTAT1));
+ pr_err("ARRSTAT2: 0x%08x\n", mfl2(L2ARRSTAT2));
+ pr_err("CPUSTAT: 0x%08x\n", mfl2(L2CPUSTAT));
+ pr_err("RACSTAT0: 0x%08x\n", mfl2(L2RACSTAT0));
+ pr_err("WACSTAT0: 0x%08x\n", mfl2(L2WACSTAT0));
+ pr_err("WACSTAT1: 0x%08x\n", mfl2(L2WACSTAT1));
+ pr_err("WACSTAT2: 0x%08x\n", mfl2(L2WACSTAT2));
+ pr_err("WDFSTAT: 0x%08x\n", mfl2(L2WDFSTAT));
+ pr_err("LOG0: 0x%08x\n", mfl2(L2LOG0));
+ pr_err("LOG1: 0x%08x\n", mfl2(L2LOG1));
+ pr_err("LOG2: 0x%08x\n", mfl2(L2LOG2));
+ pr_err("LOG3: 0x%08x\n", mfl2(L2LOG3));
+ pr_err("LOG4: 0x%08x\n", mfl2(L2LOG4));
+ pr_err("LOG5: 0x%08x\n", mfl2(L2LOG5));
+}
+
+static void show_plbopb_regs(u32 base, int num)
+{
+ pr_err("\nPLBOPB Bridge %d:\n", num);
+ pr_err("GESR0: 0x%08x\n", mfdcr(base + PLB4OPB_GESR0));
+ pr_err("GESR1: 0x%08x\n", mfdcr(base + PLB4OPB_GESR1));
+ pr_err("GESR2: 0x%08x\n", mfdcr(base + PLB4OPB_GESR2));
+ pr_err("GEARU: 0x%08x\n", mfdcr(base + PLB4OPB_GEARU));
+ pr_err("GEAR: 0x%08x\n", mfdcr(base + PLB4OPB_GEAR));
+}
+
+static irqreturn_t bus_err_handler(int irq, void *data)
+{
+ pr_err("Bus Error\n");
+
+ l2regs();
+
+ pr_err("\nPLB6 Controller:\n");
+ pr_err("BC_SHD: 0x%08x\n", mfdcr(DCRN_PLB6_SHD));
+ pr_err("BC_ERR: 0x%08x\n", mfdcr(DCRN_PLB6_ERR));
+
+ pr_err("\nPLB6-to-PLB4 Bridge:\n");
+ pr_err("ESR: 0x%08x\n", mfdcr(DCRN_PLB6PLB4_ESR));
+ pr_err("EARH: 0x%08x\n", mfdcr(DCRN_PLB6PLB4_EARH));
+ pr_err("EARL: 0x%08x\n", mfdcr(DCRN_PLB6PLB4_EARL));
+
+ pr_err("\nPLB4-to-PLB6 Bridge:\n");
+ pr_err("ESR: 0x%08x\n", mfdcr(DCRN_PLB4PLB6_ESR));
+ pr_err("EARH: 0x%08x\n", mfdcr(DCRN_PLB4PLB6_EARH));
+ pr_err("EARL: 0x%08x\n", mfdcr(DCRN_PLB4PLB6_EARL));
+
+ pr_err("\nPLB6-to-MCIF Bridge:\n");
+ pr_err("BESR0: 0x%08x\n", mfdcr(DCRN_PLB6MCIF_BESR0));
+ pr_err("BESR1: 0x%08x\n", mfdcr(DCRN_PLB6MCIF_BESR1));
+ pr_err("BEARH: 0x%08x\n", mfdcr(DCRN_PLB6MCIF_BEARH));
+ pr_err("BEARL: 0x%08x\n", mfdcr(DCRN_PLB6MCIF_BEARL));
+
+ pr_err("\nPLB4 Arbiter:\n");
+ pr_err("P0ESRH 0x%08x\n", mfdcr(DCRN_PLB4_P0ESRH));
+ pr_err("P0ESRL 0x%08x\n", mfdcr(DCRN_PLB4_P0ESRL));
+ pr_err("P0EARH 0x%08x\n", mfdcr(DCRN_PLB4_P0EARH));
+ pr_err("P0EARH 0x%08x\n", mfdcr(DCRN_PLB4_P0EARH));
+ pr_err("P1ESRH 0x%08x\n", mfdcr(DCRN_PLB4_P1ESRH));
+ pr_err("P1ESRL 0x%08x\n", mfdcr(DCRN_PLB4_P1ESRL));
+ pr_err("P1EARH 0x%08x\n", mfdcr(DCRN_PLB4_P1EARH));
+ pr_err("P1EARH 0x%08x\n", mfdcr(DCRN_PLB4_P1EARH));
+
+ show_plbopb_regs(DCRN_PLB4OPB0_BASE, 0);
+ show_plbopb_regs(DCRN_PLB4OPB1_BASE, 1);
+ show_plbopb_regs(DCRN_PLB4OPB2_BASE, 2);
+ show_plbopb_regs(DCRN_PLB4OPB3_BASE, 3);
+
+ pr_err("\nPLB4-to-AHB Bridge:\n");
+ pr_err("ESR: 0x%08x\n", mfdcr(DCRN_PLB4AHB_ESR));
+ pr_err("SEUAR: 0x%08x\n", mfdcr(DCRN_PLB4AHB_SEUAR));
+ pr_err("SELAR: 0x%08x\n", mfdcr(DCRN_PLB4AHB_SELAR));
+
+ pr_err("\nAHB-to-PLB4 Bridge:\n");
+ pr_err("\nESR: 0x%08x\n", mfdcr(DCRN_AHBPLB4_ESR));
+ pr_err("\nEAR: 0x%08x\n", mfdcr(DCRN_AHBPLB4_EAR));
+ panic("Bus Error\n");
+}
+
+static irqreturn_t cmu_err_handler(int irq, void *data) {
+ pr_err("CMU Error\n");
+ pr_err("FIR0: 0x%08x\n", mfcmu(CMUN_FIR0));
+ panic("CMU Error\n");
+}
+
+static irqreturn_t conf_err_handler(int irq, void *data) {
+ pr_err("Configuration Logic Error\n");
+ pr_err("CONF_FIR: 0x%08x\n", mfdcr(DCRN_CONF_FIR_RWC));
+ pr_err("RPERR0: 0x%08x\n", mfdcr(DCRN_CONF_RPERR0));
+ pr_err("RPERR1: 0x%08x\n", mfdcr(DCRN_CONF_RPERR1));
+ panic("Configuration Logic Error\n");
+}
+
+static irqreturn_t opbd_err_handler(int irq, void *data) {
+ panic("OPBD Error\n");
+}
+
+static irqreturn_t mcue_handler(int irq, void *data) {
+ pr_err("DDR: Uncorrectable Error\n");
+ pr_err("MCSTAT: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_MCSTAT));
+ pr_err("MCOPT1: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_MCOPT1));
+ pr_err("MCOPT2: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_MCOPT2));
+ pr_err("PHYSTAT: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_PHYSTAT));
+ pr_err("CFGR0: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_CFGR0));
+ pr_err("CFGR1: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_CFGR1));
+ pr_err("CFGR2: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_CFGR2));
+ pr_err("CFGR3: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_CFGR3));
+ pr_err("SCRUB_CNTL: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_SCRUB_CNTL));
+ pr_err("ECCERR_PORT0: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_ECCERR_PORT0));
+ pr_err("ECCERR_ADDR_PORT0: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_ECCERR_ADDR_PORT0));
+ pr_err("ECCERR_CNT_PORT0: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_ECCERR_COUNT_PORT0));
+ pr_err("ECC_CHECK_PORT0: 0x%08x\n",
+ mfdcr(DCRN_DDR34_BASE + DCRN_DDR34_ECC_CHECK_PORT0));
+ pr_err("MCER0: 0x%08x\n",
+ mfdcr(DCRN_CW_BASE + DCRN_CW_MCER0));
+ pr_err("MCER1: 0x%08x\n",
+ mfdcr(DCRN_CW_BASE + DCRN_CW_MCER1));
+ pr_err("BESR: 0x%08x\n",
+ mfdcr(DCRN_PLB6MCIF_BESR0));
+ pr_err("BEARL: 0x%08x\n",
+ mfdcr(DCRN_PLB6MCIF_BEARL));
+ pr_err("BEARH: 0x%08x\n",
+ mfdcr(DCRN_PLB6MCIF_BEARH));
+ panic("DDR: Uncorrectable Error\n");
+}
+
+static irqreturn_t rst_wrn_handler(int irq, void *data) {
+ u32 crcs = mfcmu(CMUN_CRCS);
+ switch (crcs & CRCS_STAT_MASK) {
+ case CRCS_STAT_CHIP_RST_B:
+ panic("Received chassis-initiated reset request");
+ default:
+ panic("Unknown external reset: CRCS=0x%x", crcs);
+ }
+}
+
+static void node_irq_request(const char *compat, irq_handler_t errirq_handler)
+{
+ struct device_node *np;
+ unsigned int irq;
+ int32_t rc;
+
+ for_each_compatible_node(np, NULL, compat) {
+ irq = irq_of_parse_and_map(np, 0);
+ if (irq == NO_IRQ) {
+ pr_err("device tree node %pOFn is missing a interrupt",
+ np);
+ of_node_put(np);
+ return;
+ }
+
+ rc = request_irq(irq, errirq_handler, 0, np->name, np);
+ if (rc) {
+ pr_err("fsp_of_probe: request_irq failed: np=%pOF rc=%d",
+ np, rc);
+ of_node_put(np);
+ return;
+ }
+ }
+}
+
+static void critical_irq_setup(void)
+{
+ node_irq_request(FSP2_CMU_ERR, cmu_err_handler);
+ node_irq_request(FSP2_BUS_ERR, bus_err_handler);
+ node_irq_request(FSP2_CONF_ERR, conf_err_handler);
+ node_irq_request(FSP2_OPBD_ERR, opbd_err_handler);
+ node_irq_request(FSP2_MCUE, mcue_handler);
+ node_irq_request(FSP2_RST_WRN, rst_wrn_handler);
+}
+
+static int __init fsp2_device_probe(void)
+{
+ of_platform_bus_probe(NULL, fsp2_of_bus, NULL);
+ return 0;
+}
+machine_device_initcall(fsp2, fsp2_device_probe);
+
+static int __init fsp2_probe(void)
+{
+ u32 val;
+ unsigned long root = of_get_flat_dt_root();
+
+ if (!of_flat_dt_is_compatible(root, "ibm,fsp2"))
+ return 0;
+
+ /* Clear BC_ERR and mask snoopable request plb errors. */
+ val = mfdcr(DCRN_PLB6_CR0);
+ val |= 0x20000000;
+ mtdcr(DCRN_PLB6_BASE, val);
+ mtdcr(DCRN_PLB6_HD, 0xffff0000);
+ mtdcr(DCRN_PLB6_SHD, 0xffff0000);
+
+ /* TVSENSE reset is blocked (clock gated) by the POR default of the TVS
+ * sleep config bit. As a consequence, TVSENSE will provide erratic
+ * sensor values, which may result in spurious (parity) errors
+ * recorded in the CMU FIR and leading to erroneous interrupt requests
+ * once the CMU interrupt is unmasked.
+ */
+
+ /* 1. set TVS1[UNDOZE] */
+ val = mfcmu(CMUN_TVS1);
+ val |= 0x4;
+ mtcmu(CMUN_TVS1, val);
+
+ /* 2. clear FIR[TVS] and FIR[TVSPAR] */
+ val = mfcmu(CMUN_FIR0);
+ val |= 0x30000000;
+ mtcmu(CMUN_FIR0, val);
+
+ /* L2 machine checks */
+ mtl2(L2PLBMCKEN0, 0xffffffff);
+ mtl2(L2PLBMCKEN1, 0x0000ffff);
+ mtl2(L2ARRMCKEN0, 0xffffffff);
+ mtl2(L2ARRMCKEN1, 0xffffffff);
+ mtl2(L2ARRMCKEN2, 0xfffff000);
+ mtl2(L2CPUMCKEN, 0xffffffff);
+ mtl2(L2RACMCKEN0, 0xffffffff);
+ mtl2(L2WACMCKEN0, 0xffffffff);
+ mtl2(L2WACMCKEN1, 0xffffffff);
+ mtl2(L2WACMCKEN2, 0xffffffff);
+ mtl2(L2WDFMCKEN, 0xffffffff);
+
+ /* L2 interrupts */
+ mtl2(L2PLBINTEN1, 0xffff0000);
+
+ /*
+ * At a global level, enable all L2 machine checks and interrupts
+ * reported by the L2 subsystems, except for the external machine check
+ * input (UIC0.1).
+ */
+ mtl2(L2MCKEN, 0x000007ff);
+ mtl2(L2INTEN, 0x000004ff);
+
+ /* Enable FSP-2 configuration logic parity errors */
+ mtdcr(DCRN_CONF_EIR_RS, 0x80000000);
+ return 1;
+}
+
+static void __init fsp2_irq_init(void)
+{
+ uic_init_tree();
+ critical_irq_setup();
+}
+
+define_machine(fsp2) {
+ .name = "FSP-2",
+ .probe = fsp2_probe,
+ .progress = udbg_progress,
+ .init_IRQ = fsp2_irq_init,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/fsp2.h b/arch/powerpc/platforms/44x/fsp2.h
new file mode 100644
index 000000000..9e1d52754
--- /dev/null
+++ b/arch/powerpc/platforms/44x/fsp2.h
@@ -0,0 +1,272 @@
+#ifndef _ASM_POWERPC_FSP_DCR_H_
+#define _ASM_POWERPC_FSP_DCR_H_
+#ifdef __KERNEL__
+#include <asm/dcr.h>
+
+#define DCRN_CMU_ADDR 0x00C /* Chip management unic addr */
+#define DCRN_CMU_DATA 0x00D /* Chip management unic data */
+
+/* PLB4 Arbiter */
+#define DCRN_PLB4_PCBI 0x010 /* PLB Crossbar ID/Rev Register */
+#define DCRN_PLB4_P0ACR 0x011 /* PLB0 Arbiter Control Register */
+#define DCRN_PLB4_P0ESRL 0x012 /* PLB0 Error Status Register Low */
+#define DCRN_PLB4_P0ESRH 0x013 /* PLB0 Error Status Register High */
+#define DCRN_PLB4_P0EARL 0x014 /* PLB0 Error Address Register Low */
+#define DCRN_PLB4_P0EARH 0x015 /* PLB0 Error Address Register High */
+#define DCRN_PLB4_P0ESRLS 0x016 /* PLB0 Error Status Register Low Set*/
+#define DCRN_PLB4_P0ESRHS 0x017 /* PLB0 Error Status Register High */
+#define DCRN_PLB4_PCBC 0x018 /* PLB Crossbar Control Register */
+#define DCRN_PLB4_P1ACR 0x019 /* PLB1 Arbiter Control Register */
+#define DCRN_PLB4_P1ESRL 0x01A /* PLB1 Error Status Register Low */
+#define DCRN_PLB4_P1ESRH 0x01B /* PLB1 Error Status Register High */
+#define DCRN_PLB4_P1EARL 0x01C /* PLB1 Error Address Register Low */
+#define DCRN_PLB4_P1EARH 0x01D /* PLB1 Error Address Register High */
+#define DCRN_PLB4_P1ESRLS 0x01E /* PLB1 Error Status Register Low Set*/
+#define DCRN_PLB4_P1ESRHS 0x01F /*PLB1 Error Status Register High Set*/
+
+/* PLB4/OPB bridge 0, 1, 2, 3 */
+#define DCRN_PLB4OPB0_BASE 0x020
+#define DCRN_PLB4OPB1_BASE 0x030
+#define DCRN_PLB4OPB2_BASE 0x040
+#define DCRN_PLB4OPB3_BASE 0x050
+
+#define PLB4OPB_GESR0 0x0 /* Error status 0: Master Dev 0-3 */
+#define PLB4OPB_GEAR 0x2 /* Error Address Register */
+#define PLB4OPB_GEARU 0x3 /* Error Upper Address Register */
+#define PLB4OPB_GESR1 0x4 /* Error Status 1: Master Dev 4-7 */
+#define PLB4OPB_GESR2 0xC /* Error Status 2: Master Dev 8-11 */
+
+/* PLB4-to-AHB Bridge */
+#define DCRN_PLB4AHB_BASE 0x400
+#define DCRN_PLB4AHB_SEUAR (DCRN_PLB4AHB_BASE + 1)
+#define DCRN_PLB4AHB_SELAR (DCRN_PLB4AHB_BASE + 2)
+#define DCRN_PLB4AHB_ESR (DCRN_PLB4AHB_BASE + 3)
+#define DCRN_AHBPLB4_ESR (DCRN_PLB4AHB_BASE + 8)
+#define DCRN_AHBPLB4_EAR (DCRN_PLB4AHB_BASE + 9)
+
+/* PLB6 Controller */
+#define DCRN_PLB6_BASE 0x11111300
+#define DCRN_PLB6_CR0 (DCRN_PLB6_BASE)
+#define DCRN_PLB6_ERR (DCRN_PLB6_BASE + 0x0B)
+#define DCRN_PLB6_HD (DCRN_PLB6_BASE + 0x0E)
+#define DCRN_PLB6_SHD (DCRN_PLB6_BASE + 0x10)
+
+/* PLB4-to-PLB6 Bridge */
+#define DCRN_PLB4PLB6_BASE 0x11111320
+#define DCRN_PLB4PLB6_ESR (DCRN_PLB4PLB6_BASE + 1)
+#define DCRN_PLB4PLB6_EARH (DCRN_PLB4PLB6_BASE + 3)
+#define DCRN_PLB4PLB6_EARL (DCRN_PLB4PLB6_BASE + 4)
+
+/* PLB6-to-PLB4 Bridge */
+#define DCRN_PLB6PLB4_BASE 0x11111350
+#define DCRN_PLB6PLB4_ESR (DCRN_PLB6PLB4_BASE + 1)
+#define DCRN_PLB6PLB4_EARH (DCRN_PLB6PLB4_BASE + 3)
+#define DCRN_PLB6PLB4_EARL (DCRN_PLB6PLB4_BASE + 4)
+
+/* PLB6-to-MCIF Bridge */
+#define DCRN_PLB6MCIF_BASE 0x11111380
+#define DCRN_PLB6MCIF_BESR0 (DCRN_PLB6MCIF_BASE + 0)
+#define DCRN_PLB6MCIF_BESR1 (DCRN_PLB6MCIF_BASE + 1)
+#define DCRN_PLB6MCIF_BEARL (DCRN_PLB6MCIF_BASE + 2)
+#define DCRN_PLB6MCIF_BEARH (DCRN_PLB6MCIF_BASE + 3)
+
+/* Configuration Logic Registers */
+#define DCRN_CONF_BASE 0x11111400
+#define DCRN_CONF_FIR_RWC (DCRN_CONF_BASE + 0x3A)
+#define DCRN_CONF_EIR_RS (DCRN_CONF_BASE + 0x3E)
+#define DCRN_CONF_RPERR0 (DCRN_CONF_BASE + 0x4D)
+#define DCRN_CONF_RPERR1 (DCRN_CONF_BASE + 0x4E)
+
+#define DCRN_L2CDCRAI 0x11111100
+#define DCRN_L2CDCRDI 0x11111104
+/* L2 indirect addresses */
+#define L2MCK 0x120
+#define L2MCKEN 0x130
+#define L2INT 0x150
+#define L2INTEN 0x160
+#define L2LOG0 0x180
+#define L2LOG1 0x184
+#define L2LOG2 0x188
+#define L2LOG3 0x18C
+#define L2LOG4 0x190
+#define L2LOG5 0x194
+#define L2PLBSTAT0 0x300
+#define L2PLBSTAT1 0x304
+#define L2PLBMCKEN0 0x330
+#define L2PLBMCKEN1 0x334
+#define L2PLBINTEN0 0x360
+#define L2PLBINTEN1 0x364
+#define L2ARRSTAT0 0x500
+#define L2ARRSTAT1 0x504
+#define L2ARRSTAT2 0x508
+#define L2ARRMCKEN0 0x530
+#define L2ARRMCKEN1 0x534
+#define L2ARRMCKEN2 0x538
+#define L2ARRINTEN0 0x560
+#define L2ARRINTEN1 0x564
+#define L2ARRINTEN2 0x568
+#define L2CPUSTAT 0x700
+#define L2CPUMCKEN 0x730
+#define L2CPUINTEN 0x760
+#define L2RACSTAT0 0x900
+#define L2RACMCKEN0 0x930
+#define L2RACINTEN0 0x960
+#define L2WACSTAT0 0xD00
+#define L2WACSTAT1 0xD04
+#define L2WACSTAT2 0xD08
+#define L2WACMCKEN0 0xD30
+#define L2WACMCKEN1 0xD34
+#define L2WACMCKEN2 0xD38
+#define L2WACINTEN0 0xD60
+#define L2WACINTEN1 0xD64
+#define L2WACINTEN2 0xD68
+#define L2WDFSTAT 0xF00
+#define L2WDFMCKEN 0xF30
+#define L2WDFINTEN 0xF60
+
+/* DDR3/4 Memory Controller */
+#define DCRN_DDR34_BASE 0x11120000
+#define DCRN_DDR34_MCSTAT 0x10
+#define DCRN_DDR34_MCOPT1 0x20
+#define DCRN_DDR34_MCOPT2 0x21
+#define DCRN_DDR34_PHYSTAT 0x32
+#define DCRN_DDR34_CFGR0 0x40
+#define DCRN_DDR34_CFGR1 0x41
+#define DCRN_DDR34_CFGR2 0x42
+#define DCRN_DDR34_CFGR3 0x43
+#define DCRN_DDR34_SCRUB_CNTL 0xAA
+#define DCRN_DDR34_SCRUB_INT 0xAB
+#define DCRN_DDR34_SCRUB_START_ADDR 0xB0
+#define DCRN_DDR34_SCRUB_END_ADDR 0xD0
+#define DCRN_DDR34_ECCERR_ADDR_PORT0 0xE0
+#define DCRN_DDR34_ECCERR_ADDR_PORT1 0xE1
+#define DCRN_DDR34_ECCERR_ADDR_PORT2 0xE2
+#define DCRN_DDR34_ECCERR_ADDR_PORT3 0xE3
+#define DCRN_DDR34_ECCERR_COUNT_PORT0 0xE4
+#define DCRN_DDR34_ECCERR_COUNT_PORT1 0xE5
+#define DCRN_DDR34_ECCERR_COUNT_PORT2 0xE6
+#define DCRN_DDR34_ECCERR_COUNT_PORT3 0xE7
+#define DCRN_DDR34_ECCERR_PORT0 0xF0
+#define DCRN_DDR34_ECCERR_PORT1 0xF2
+#define DCRN_DDR34_ECCERR_PORT2 0xF4
+#define DCRN_DDR34_ECCERR_PORT3 0xF6
+#define DCRN_DDR34_ECC_CHECK_PORT0 0xF8
+#define DCRN_DDR34_ECC_CHECK_PORT1 0xF9
+#define DCRN_DDR34_ECC_CHECK_PORT2 0xF9
+#define DCRN_DDR34_ECC_CHECK_PORT3 0xFB
+
+#define DDR34_SCRUB_CNTL_STOP 0x00000000
+#define DDR34_SCRUB_CNTL_SCRUB 0x80000000
+#define DDR34_SCRUB_CNTL_UE_STOP 0x20000000
+#define DDR34_SCRUB_CNTL_CE_STOP 0x10000000
+#define DDR34_SCRUB_CNTL_RANK_EN 0x00008000
+
+/* PLB-Attached DDR3/4 Core Wrapper */
+#define DCRN_CW_BASE 0x11111800
+#define DCRN_CW_MCER0 0x00
+#define DCRN_CW_MCER1 0x01
+#define DCRN_CW_MCER_AND0 0x02
+#define DCRN_CW_MCER_AND1 0x03
+#define DCRN_CW_MCER_OR0 0x04
+#define DCRN_CW_MCER_OR1 0x05
+#define DCRN_CW_MCER_MASK0 0x06
+#define DCRN_CW_MCER_MASK1 0x07
+#define DCRN_CW_MCER_MASK_AND0 0x08
+#define DCRN_CW_MCER_MASK_AND1 0x09
+#define DCRN_CW_MCER_MASK_OR0 0x0A
+#define DCRN_CW_MCER_MASK_OR1 0x0B
+#define DCRN_CW_MCER_ACTION0 0x0C
+#define DCRN_CW_MCER_ACTION1 0x0D
+#define DCRN_CW_MCER_WOF0 0x0E
+#define DCRN_CW_MCER_WOF1 0x0F
+#define DCRN_CW_LFIR 0x10
+#define DCRN_CW_LFIR_AND 0x11
+#define DCRN_CW_LFIR_OR 0x12
+#define DCRN_CW_LFIR_MASK 0x13
+#define DCRN_CW_LFIR_MASK_AND 0x14
+#define DCRN_CW_LFIR_MASK_OR 0x15
+
+#define CW_MCER0_MEM_CE 0x00020000
+/* CMU addresses */
+#define CMUN_CRCS 0x00 /* Chip Reset Control/Status */
+#define CMUN_CONFFIR0 0x20 /* Config Reg Parity FIR 0 */
+#define CMUN_CONFFIR1 0x21 /* Config Reg Parity FIR 1 */
+#define CMUN_CONFFIR2 0x22 /* Config Reg Parity FIR 2 */
+#define CMUN_CONFFIR3 0x23 /* Config Reg Parity FIR 3 */
+#define CMUN_URCR3_RS 0x24 /* Unit Reset Control Reg 3 Set */
+#define CMUN_URCR3_C 0x25 /* Unit Reset Control Reg 3 Clear */
+#define CMUN_URCR3_P 0x26 /* Unit Reset Control Reg 3 Pulse */
+#define CMUN_PW0 0x2C /* Pulse Width Register */
+#define CMUN_URCR0_P 0x2D /* Unit Reset Control Reg 0 Pulse */
+#define CMUN_URCR1_P 0x2E /* Unit Reset Control Reg 1 Pulse */
+#define CMUN_URCR2_P 0x2F /* Unit Reset Control Reg 2 Pulse */
+#define CMUN_CLS_RW 0x30 /* Code Load Status (Read/Write) */
+#define CMUN_CLS_S 0x31 /* Code Load Status (Set) */
+#define CMUN_CLS_C 0x32 /* Code Load Status (Clear */
+#define CMUN_URCR2_RS 0x33 /* Unit Reset Control Reg 2 Set */
+#define CMUN_URCR2_C 0x34 /* Unit Reset Control Reg 2 Clear */
+#define CMUN_CLKEN0 0x35 /* Clock Enable 0 */
+#define CMUN_CLKEN1 0x36 /* Clock Enable 1 */
+#define CMUN_PCD0 0x37 /* PSI clock divider 0 */
+#define CMUN_PCD1 0x38 /* PSI clock divider 1 */
+#define CMUN_TMR0 0x39 /* Reset Timer */
+#define CMUN_TVS0 0x3A /* TV Sense Reg 0 */
+#define CMUN_TVS1 0x3B /* TV Sense Reg 1 */
+#define CMUN_MCCR 0x3C /* DRAM Configuration Reg */
+#define CMUN_FIR0 0x3D /* Fault Isolation Reg 0 */
+#define CMUN_FMR0 0x3E /* FIR Mask Reg 0 */
+#define CMUN_ETDRB 0x3F /* ETDR Backdoor */
+
+/* CRCS bit fields */
+#define CRCS_STAT_MASK 0xF0000000
+#define CRCS_STAT_POR 0x10000000
+#define CRCS_STAT_PHR 0x20000000
+#define CRCS_STAT_PCIE 0x30000000
+#define CRCS_STAT_CRCS_SYS 0x40000000
+#define CRCS_STAT_DBCR_SYS 0x50000000
+#define CRCS_STAT_HOST_SYS 0x60000000
+#define CRCS_STAT_CHIP_RST_B 0x70000000
+#define CRCS_STAT_CRCS_CHIP 0x80000000
+#define CRCS_STAT_DBCR_CHIP 0x90000000
+#define CRCS_STAT_HOST_CHIP 0xA0000000
+#define CRCS_STAT_PSI_CHIP 0xB0000000
+#define CRCS_STAT_CRCS_CORE 0xC0000000
+#define CRCS_STAT_DBCR_CORE 0xD0000000
+#define CRCS_STAT_HOST_CORE 0xE0000000
+#define CRCS_STAT_PCIE_HOT 0xF0000000
+#define CRCS_STAT_SELF_CORE 0x40000000
+#define CRCS_STAT_SELF_CHIP 0x50000000
+#define CRCS_WATCHE 0x08000000
+#define CRCS_CORE 0x04000000 /* Reset PPC440 core */
+#define CRCS_CHIP 0x02000000 /* Chip Reset */
+#define CRCS_SYS 0x01000000 /* System Reset */
+#define CRCS_WRCR 0x00800000 /* Watchdog reset on core reset */
+#define CRCS_EXTCR 0x00080000 /* CHIP_RST_B triggers chip reset */
+#define CRCS_PLOCK 0x00000002 /* PLL Locked */
+
+#define mtcmu(reg, data) \
+do { \
+ mtdcr(DCRN_CMU_ADDR, reg); \
+ mtdcr(DCRN_CMU_DATA, data); \
+} while (0)
+
+#define mfcmu(reg)\
+ ({u32 data; \
+ mtdcr(DCRN_CMU_ADDR, reg); \
+ data = mfdcr(DCRN_CMU_DATA); \
+ data; })
+
+#define mtl2(reg, data) \
+do { \
+ mtdcr(DCRN_L2CDCRAI, reg); \
+ mtdcr(DCRN_L2CDCRDI, data); \
+} while (0)
+
+#define mfl2(reg) \
+ ({u32 data; \
+ mtdcr(DCRN_L2CDCRAI, reg); \
+ data = mfdcr(DCRN_L2CDCRDI); \
+ data; })
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_FSP2_DCR_H_ */
diff --git a/arch/powerpc/platforms/44x/idle.c b/arch/powerpc/platforms/44x/idle.c
new file mode 100644
index 000000000..f533b495e
--- /dev/null
+++ b/arch/powerpc/platforms/44x/idle.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2008 IBM Corp.
+ *
+ * Based on arch/powerpc/platforms/pasemi/idle.c:
+ * Copyright (C) 2006-2007 PA Semi, Inc
+ *
+ * Added by: Jerone Young <jyoung5@us.ibm.com>
+ */
+
+#include <linux/of.h>
+#include <linux/kernel.h>
+#include <asm/machdep.h>
+
+static int mode_spin;
+
+static void ppc44x_idle(void)
+{
+ unsigned long msr_save;
+
+ msr_save = mfmsr();
+ /* set wait state MSR */
+ mtmsr(msr_save|MSR_WE|MSR_EE|MSR_CE|MSR_DE);
+ isync();
+ /* return to initial state */
+ mtmsr(msr_save);
+ isync();
+}
+
+int __init ppc44x_idle_init(void)
+{
+ if (!mode_spin) {
+ /* If we are not setting spin mode
+ then we set to wait mode */
+ ppc_md.power_save = &ppc44x_idle;
+ }
+
+ return 0;
+}
+
+arch_initcall(ppc44x_idle_init);
+
+static int __init idle_param(char *p)
+{
+
+ if (!strcmp("spin", p)) {
+ mode_spin = 1;
+ ppc_md.power_save = NULL;
+ }
+
+ return 0;
+}
+
+early_param("idle", idle_param);
diff --git a/arch/powerpc/platforms/44x/iss4xx.c b/arch/powerpc/platforms/44x/iss4xx.c
new file mode 100644
index 000000000..c5f825914
--- /dev/null
+++ b/arch/powerpc/platforms/44x/iss4xx.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PPC476 board specific routines
+ *
+ * Copyright 2010 Torez Smith, IBM Corporation.
+ *
+ * Based on earlier code:
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+#include <asm/mpic.h>
+#include <asm/mmu.h>
+
+static const struct of_device_id iss4xx_of_bus[] __initconst = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,plb6", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+static int __init iss4xx_device_probe(void)
+{
+ of_platform_bus_probe(NULL, iss4xx_of_bus, NULL);
+ of_instantiate_rtc();
+
+ return 0;
+}
+machine_device_initcall(iss4xx, iss4xx_device_probe);
+
+/* We can have either UICs or MPICs */
+static void __init iss4xx_init_irq(void)
+{
+ struct device_node *np;
+
+ /* Find top level interrupt controller */
+ for_each_node_with_property(np, "interrupt-controller") {
+ if (of_get_property(np, "interrupts", NULL) == NULL)
+ break;
+ }
+ if (np == NULL)
+ panic("Can't find top level interrupt controller");
+
+ /* Check type and do appropriate initialization */
+ if (of_device_is_compatible(np, "ibm,uic")) {
+ uic_init_tree();
+ ppc_md.get_irq = uic_get_irq;
+#ifdef CONFIG_MPIC
+ } else if (of_device_is_compatible(np, "chrp,open-pic")) {
+ /* The MPIC driver will get everything it needs from the
+ * device-tree, just pass 0 to all arguments
+ */
+ struct mpic *mpic = mpic_alloc(np, 0, MPIC_NO_RESET, 0, 0, " MPIC ");
+ BUG_ON(mpic == NULL);
+ mpic_init(mpic);
+ ppc_md.get_irq = mpic_get_irq;
+#endif
+ } else
+ panic("Unrecognized top level interrupt controller");
+}
+
+#ifdef CONFIG_SMP
+static void smp_iss4xx_setup_cpu(int cpu)
+{
+ mpic_setup_this_cpu();
+}
+
+static int smp_iss4xx_kick_cpu(int cpu)
+{
+ struct device_node *cpunode = of_get_cpu_node(cpu, NULL);
+ const u64 *spin_table_addr_prop;
+ u32 *spin_table;
+ extern void start_secondary_47x(void);
+
+ BUG_ON(cpunode == NULL);
+
+ /* Assume spin table. We could test for the enable-method in
+ * the device-tree but currently there's little point as it's
+ * our only supported method
+ */
+ spin_table_addr_prop = of_get_property(cpunode, "cpu-release-addr",
+ NULL);
+ if (spin_table_addr_prop == NULL) {
+ pr_err("CPU%d: Can't start, missing cpu-release-addr !\n", cpu);
+ return -ENOENT;
+ }
+
+ /* Assume it's mapped as part of the linear mapping. This is a bit
+ * fishy but will work fine for now
+ */
+ spin_table = (u32 *)__va(*spin_table_addr_prop);
+ pr_debug("CPU%d: Spin table mapped at %p\n", cpu, spin_table);
+
+ spin_table[3] = cpu;
+ smp_wmb();
+ spin_table[1] = __pa(start_secondary_47x);
+ mb();
+
+ return 0;
+}
+
+static struct smp_ops_t iss_smp_ops = {
+ .probe = smp_mpic_probe,
+ .message_pass = smp_mpic_message_pass,
+ .setup_cpu = smp_iss4xx_setup_cpu,
+ .kick_cpu = smp_iss4xx_kick_cpu,
+ .give_timebase = smp_generic_give_timebase,
+ .take_timebase = smp_generic_take_timebase,
+};
+
+static void __init iss4xx_smp_init(void)
+{
+ if (mmu_has_feature(MMU_FTR_TYPE_47x))
+ smp_ops = &iss_smp_ops;
+}
+
+#else /* CONFIG_SMP */
+static void __init iss4xx_smp_init(void) { }
+#endif /* CONFIG_SMP */
+
+static void __init iss4xx_setup_arch(void)
+{
+ iss4xx_smp_init();
+}
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init iss4xx_probe(void)
+{
+ if (!of_machine_is_compatible("ibm,iss-4xx"))
+ return 0;
+
+ return 1;
+}
+
+define_machine(iss4xx) {
+ .name = "ISS-4xx",
+ .probe = iss4xx_probe,
+ .progress = udbg_progress,
+ .init_IRQ = iss4xx_init_irq,
+ .setup_arch = iss4xx_setup_arch,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/machine_check.c b/arch/powerpc/platforms/44x/machine_check.c
new file mode 100644
index 000000000..a5c898bb9
--- /dev/null
+++ b/arch/powerpc/platforms/44x/machine_check.c
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ */
+
+#include <linux/kernel.h>
+#include <linux/printk.h>
+#include <linux/ptrace.h>
+
+#include <asm/reg.h>
+#include <asm/cacheflush.h>
+
+int machine_check_440A(struct pt_regs *regs)
+{
+ unsigned long reason = regs->dsisr;
+
+ printk("Machine check in kernel mode.\n");
+ if (reason & ESR_IMCP){
+ printk("Instruction Synchronous Machine Check exception\n");
+ mtspr(SPRN_ESR, reason & ~ESR_IMCP);
+ }
+ else {
+ u32 mcsr = mfspr(SPRN_MCSR);
+ if (mcsr & MCSR_IB)
+ printk("Instruction Read PLB Error\n");
+ if (mcsr & MCSR_DRB)
+ printk("Data Read PLB Error\n");
+ if (mcsr & MCSR_DWB)
+ printk("Data Write PLB Error\n");
+ if (mcsr & MCSR_TLBP)
+ printk("TLB Parity Error\n");
+ if (mcsr & MCSR_ICP){
+ flush_instruction_cache();
+ printk("I-Cache Parity Error\n");
+ }
+ if (mcsr & MCSR_DCSP)
+ printk("D-Cache Search Parity Error\n");
+ if (mcsr & MCSR_DCFP)
+ printk("D-Cache Flush Parity Error\n");
+ if (mcsr & MCSR_IMPE)
+ printk("Machine Check exception is imprecise\n");
+
+ /* Clear MCSR */
+ mtspr(SPRN_MCSR, mcsr);
+ }
+ return 0;
+}
+
+#ifdef CONFIG_PPC_47x
+int machine_check_47x(struct pt_regs *regs)
+{
+ unsigned long reason = regs->dsisr;
+ u32 mcsr;
+
+ printk(KERN_ERR "Machine check in kernel mode.\n");
+ if (reason & ESR_IMCP) {
+ printk(KERN_ERR "Instruction Synchronous Machine Check exception\n");
+ mtspr(SPRN_ESR, reason & ~ESR_IMCP);
+ return 0;
+ }
+ mcsr = mfspr(SPRN_MCSR);
+ if (mcsr & MCSR_IB)
+ printk(KERN_ERR "Instruction Read PLB Error\n");
+ if (mcsr & MCSR_DRB)
+ printk(KERN_ERR "Data Read PLB Error\n");
+ if (mcsr & MCSR_DWB)
+ printk(KERN_ERR "Data Write PLB Error\n");
+ if (mcsr & MCSR_TLBP)
+ printk(KERN_ERR "TLB Parity Error\n");
+ if (mcsr & MCSR_ICP) {
+ flush_instruction_cache();
+ printk(KERN_ERR "I-Cache Parity Error\n");
+ }
+ if (mcsr & MCSR_DCSP)
+ printk(KERN_ERR "D-Cache Search Parity Error\n");
+ if (mcsr & PPC47x_MCSR_GPR)
+ printk(KERN_ERR "GPR Parity Error\n");
+ if (mcsr & PPC47x_MCSR_FPR)
+ printk(KERN_ERR "FPR Parity Error\n");
+ if (mcsr & PPC47x_MCSR_IPR)
+ printk(KERN_ERR "Machine Check exception is imprecise\n");
+
+ /* Clear MCSR */
+ mtspr(SPRN_MCSR, mcsr);
+
+ return 0;
+}
+#endif /* CONFIG_PPC_47x */
diff --git a/arch/powerpc/platforms/44x/misc_44x.S b/arch/powerpc/platforms/44x/misc_44x.S
new file mode 100644
index 000000000..3a0c4bd3d
--- /dev/null
+++ b/arch/powerpc/platforms/44x/misc_44x.S
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * This file contains miscellaneous low-level functions for PPC 44x.
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ */
+
+#include <asm/reg.h>
+#include <asm/ppc_asm.h>
+
+ .text
+
+/*
+ * Do an IO access in AS1
+ */
+_GLOBAL(as1_readb)
+ mfmsr r7
+ ori r0,r7,MSR_DS
+ sync
+ mtmsr r0
+ sync
+ isync
+ lbz r3,0(r3)
+ sync
+ mtmsr r7
+ sync
+ isync
+ blr
+
+_GLOBAL(as1_writeb)
+ mfmsr r7
+ ori r0,r7,MSR_DS
+ sync
+ mtmsr r0
+ sync
+ isync
+ stb r3,0(r4)
+ sync
+ mtmsr r7
+ sync
+ isync
+ blr
diff --git a/arch/powerpc/platforms/44x/ppc44x_simple.c b/arch/powerpc/platforms/44x/ppc44x_simple.c
new file mode 100644
index 000000000..3dbd8ddd7
--- /dev/null
+++ b/arch/powerpc/platforms/44x/ppc44x_simple.c
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Generic PowerPC 44x platform support
+ *
+ * Copyright 2008 IBM Corporation
+ *
+ * This implements simple platform support for PowerPC 44x chips. This is
+ * mostly used for eval boards or other simple and "generic" 44x boards. If
+ * your board has custom functions or hardware, then you will likely want to
+ * implement your own board.c file to accommodate it.
+ */
+
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc4xx.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+#include <asm/uic.h>
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+static const struct of_device_id ppc44x_of_bus[] __initconst = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ { .compatible = "simple-bus", },
+ {},
+};
+
+static int __init ppc44x_device_probe(void)
+{
+ of_platform_bus_probe(NULL, ppc44x_of_bus, NULL);
+
+ return 0;
+}
+machine_device_initcall(ppc44x_simple, ppc44x_device_probe);
+
+/* This is the list of boards that can be supported by this simple
+ * platform code. This does _not_ mean the boards are compatible,
+ * as they most certainly are not from a device tree perspective.
+ * However, their differences are handled by the device tree and the
+ * drivers and therefore they don't need custom board support files.
+ *
+ * Again, if your board needs to do things differently then create a
+ * board.c file for it rather than adding it to this list.
+ */
+static char *board[] __initdata = {
+ "amcc,arches",
+ "amcc,bamboo",
+ "apm,bluestone",
+ "amcc,glacier",
+ "ibm,ebony",
+ "amcc,eiger",
+ "amcc,katmai",
+ "amcc,rainier",
+ "amcc,redwood",
+ "amcc,sequoia",
+ "amcc,taishan",
+ "amcc,yosemite",
+ "mosaixtech,icon"
+};
+
+static int __init ppc44x_probe(void)
+{
+ int i = 0;
+
+ for (i = 0; i < ARRAY_SIZE(board); i++) {
+ if (of_machine_is_compatible(board[i])) {
+ pci_set_flags(PCI_REASSIGN_ALL_RSRC);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+define_machine(ppc44x_simple) {
+ .name = "PowerPC 44x Platform",
+ .probe = ppc44x_probe,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/ppc476.c b/arch/powerpc/platforms/44x/ppc476.c
new file mode 100644
index 000000000..07f7e3ce6
--- /dev/null
+++ b/arch/powerpc/platforms/44x/ppc476.c
@@ -0,0 +1,293 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PowerPC 476FPE board specific routines
+ *
+ * Copyright © 2013 Tony Breeds IBM Corporation
+ * Copyright © 2013 Alistair Popple IBM Corporation
+ *
+ * Based on earlier code:
+ * Matt Porter <mporter@kernel.crashing.org>
+ * Copyright 2002-2005 MontaVista Software Inc.
+ *
+ * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ * Copyright (c) 2003-2005 Zultys Technologies
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ * Copyright © 2011 David Kliekamp IBM Corporation
+ */
+
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/rtc.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+#include <asm/mpic.h>
+#include <asm/mmu.h>
+#include <asm/swiotlb.h>
+
+#include <linux/pci.h>
+#include <linux/i2c.h>
+
+static const struct of_device_id ppc47x_of_bus[] __initconst = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,plb6", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+/* The EEPROM is missing and the default values are bogus. This forces USB in
+ * to EHCI mode */
+static void quirk_ppc_currituck_usb_fixup(struct pci_dev *dev)
+{
+ if (of_machine_is_compatible("ibm,currituck")) {
+ pci_write_config_dword(dev, 0xe0, 0x0114231f);
+ pci_write_config_dword(dev, 0xe4, 0x00006c40);
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(0x1033, 0x0035, quirk_ppc_currituck_usb_fixup);
+
+/* Akebono has an AVR microcontroller attached to the I2C bus
+ * which is used to power off/reset the system. */
+
+/* AVR I2C Commands */
+#define AVR_PWRCTL_CMD (0x26)
+
+/* Flags for the power control I2C commands */
+#define AVR_PWRCTL_PWROFF (0x01)
+#define AVR_PWRCTL_RESET (0x02)
+
+static struct i2c_client *avr_i2c_client;
+static void __noreturn avr_halt_system(int pwrctl_flags)
+{
+ /* Request the AVR to reset the system */
+ i2c_smbus_write_byte_data(avr_i2c_client,
+ AVR_PWRCTL_CMD, pwrctl_flags);
+
+ /* Wait for system to be reset */
+ while (1)
+ ;
+}
+
+static void avr_power_off_system(void)
+{
+ avr_halt_system(AVR_PWRCTL_PWROFF);
+}
+
+static void __noreturn avr_reset_system(char *cmd)
+{
+ avr_halt_system(AVR_PWRCTL_RESET);
+}
+
+static int avr_probe(struct i2c_client *client)
+{
+ avr_i2c_client = client;
+ ppc_md.restart = avr_reset_system;
+ pm_power_off = avr_power_off_system;
+ return 0;
+}
+
+static const struct i2c_device_id avr_id[] = {
+ { "akebono-avr", 0 },
+ { }
+};
+
+static struct i2c_driver avr_driver = {
+ .driver = {
+ .name = "akebono-avr",
+ },
+ .probe_new = avr_probe,
+ .id_table = avr_id,
+};
+
+static int __init ppc47x_device_probe(void)
+{
+ i2c_add_driver(&avr_driver);
+ of_platform_bus_probe(NULL, ppc47x_of_bus, NULL);
+
+ return 0;
+}
+machine_device_initcall(ppc47x, ppc47x_device_probe);
+
+static void __init ppc47x_init_irq(void)
+{
+ struct device_node *np;
+
+ /* Find top level interrupt controller */
+ for_each_node_with_property(np, "interrupt-controller") {
+ if (of_get_property(np, "interrupts", NULL) == NULL)
+ break;
+ }
+ if (np == NULL)
+ panic("Can't find top level interrupt controller");
+
+ /* Check type and do appropriate initialization */
+ if (of_device_is_compatible(np, "chrp,open-pic")) {
+ /* The MPIC driver will get everything it needs from the
+ * device-tree, just pass 0 to all arguments
+ */
+ struct mpic *mpic =
+ mpic_alloc(np, 0, MPIC_NO_RESET, 0, 0, " MPIC ");
+ BUG_ON(mpic == NULL);
+ mpic_init(mpic);
+ ppc_md.get_irq = mpic_get_irq;
+ } else
+ panic("Unrecognized top level interrupt controller");
+}
+
+#ifdef CONFIG_SMP
+static void smp_ppc47x_setup_cpu(int cpu)
+{
+ mpic_setup_this_cpu();
+}
+
+static int smp_ppc47x_kick_cpu(int cpu)
+{
+ struct device_node *cpunode = of_get_cpu_node(cpu, NULL);
+ const u64 *spin_table_addr_prop;
+ u32 *spin_table;
+ extern void start_secondary_47x(void);
+
+ BUG_ON(cpunode == NULL);
+
+ /* Assume spin table. We could test for the enable-method in
+ * the device-tree but currently there's little point as it's
+ * our only supported method
+ */
+ spin_table_addr_prop =
+ of_get_property(cpunode, "cpu-release-addr", NULL);
+
+ if (spin_table_addr_prop == NULL) {
+ pr_err("CPU%d: Can't start, missing cpu-release-addr !\n",
+ cpu);
+ return 1;
+ }
+
+ /* Assume it's mapped as part of the linear mapping. This is a bit
+ * fishy but will work fine for now
+ *
+ * XXX: Is there any reason to assume differently?
+ */
+ spin_table = (u32 *)__va(*spin_table_addr_prop);
+ pr_debug("CPU%d: Spin table mapped at %p\n", cpu, spin_table);
+
+ spin_table[3] = cpu;
+ smp_wmb();
+ spin_table[1] = __pa(start_secondary_47x);
+ mb();
+
+ return 0;
+}
+
+static struct smp_ops_t ppc47x_smp_ops = {
+ .probe = smp_mpic_probe,
+ .message_pass = smp_mpic_message_pass,
+ .setup_cpu = smp_ppc47x_setup_cpu,
+ .kick_cpu = smp_ppc47x_kick_cpu,
+ .give_timebase = smp_generic_give_timebase,
+ .take_timebase = smp_generic_take_timebase,
+};
+
+static void __init ppc47x_smp_init(void)
+{
+ if (mmu_has_feature(MMU_FTR_TYPE_47x))
+ smp_ops = &ppc47x_smp_ops;
+}
+
+#else /* CONFIG_SMP */
+static void __init ppc47x_smp_init(void) { }
+#endif /* CONFIG_SMP */
+
+static void __init ppc47x_setup_arch(void)
+{
+
+ /* No need to check the DMA config as we /know/ our windows are all of
+ * RAM. Lets hope that doesn't change */
+ swiotlb_detect_4g();
+
+ ppc47x_smp_init();
+}
+
+static int board_rev = -1;
+static int __init ppc47x_get_board_rev(void)
+{
+ int reg;
+ u8 *fpga;
+ struct device_node *np = NULL;
+
+ if (of_machine_is_compatible("ibm,currituck")) {
+ np = of_find_compatible_node(NULL, NULL, "ibm,currituck-fpga");
+ reg = 0;
+ } else if (of_machine_is_compatible("ibm,akebono")) {
+ np = of_find_compatible_node(NULL, NULL, "ibm,akebono-fpga");
+ reg = 2;
+ }
+
+ if (!np)
+ goto fail;
+
+ fpga = (u8 *) of_iomap(np, 0);
+ of_node_put(np);
+ if (!fpga)
+ goto fail;
+
+ board_rev = ioread8(fpga + reg) & 0x03;
+ pr_info("%s: Found board revision %d\n", __func__, board_rev);
+ iounmap(fpga);
+ return 0;
+
+fail:
+ pr_info("%s: Unable to find board revision\n", __func__);
+ return 0;
+}
+machine_arch_initcall(ppc47x, ppc47x_get_board_rev);
+
+/* Use USB controller should have been hardware swizzled but it wasn't :( */
+static void ppc47x_pci_irq_fixup(struct pci_dev *dev)
+{
+ if (dev->vendor == 0x1033 && (dev->device == 0x0035 ||
+ dev->device == 0x00e0)) {
+ if (board_rev == 0) {
+ dev->irq = irq_create_mapping(NULL, 47);
+ pr_info("%s: Mapping irq %d\n", __func__, dev->irq);
+ } else if (board_rev == 2) {
+ dev->irq = irq_create_mapping(NULL, 49);
+ pr_info("%s: Mapping irq %d\n", __func__, dev->irq);
+ } else {
+ pr_alert("%s: Unknown board revision\n", __func__);
+ }
+ }
+}
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init ppc47x_probe(void)
+{
+ if (of_machine_is_compatible("ibm,akebono"))
+ return 1;
+
+ if (of_machine_is_compatible("ibm,currituck")) {
+ ppc_md.pci_irq_fixup = ppc47x_pci_irq_fixup;
+ return 1;
+ }
+
+ return 0;
+}
+
+define_machine(ppc47x) {
+ .name = "PowerPC 47x",
+ .probe = ppc47x_probe,
+ .progress = udbg_progress,
+ .init_IRQ = ppc47x_init_irq,
+ .setup_arch = ppc47x_setup_arch,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
diff --git a/arch/powerpc/platforms/44x/ppc476_modules.lds b/arch/powerpc/platforms/44x/ppc476_modules.lds
new file mode 100644
index 000000000..9fec5d34b
--- /dev/null
+++ b/arch/powerpc/platforms/44x/ppc476_modules.lds
@@ -0,0 +1,15 @@
+SECTIONS
+{
+ .text : ALIGN(4096)
+ {
+ *(.text .text.* .fixup)
+ }
+ .init.text : ALIGN(4096)
+ {
+ *(.init.text .init.text.*)
+ }
+ .exit.text : ALIGN(4096)
+ {
+ *(.exit.text .exit.text.*)
+ }
+}
diff --git a/arch/powerpc/platforms/44x/sam440ep.c b/arch/powerpc/platforms/44x/sam440ep.c
new file mode 100644
index 000000000..68ba4b009
--- /dev/null
+++ b/arch/powerpc/platforms/44x/sam440ep.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Sam440ep board specific routines based off bamboo.c code
+ * original copyrights below
+ *
+ * Wade Farnsworth <wfarnsworth@mvista.com>
+ * Copyright 2004 MontaVista Software Inc.
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ * Copyright 2007 IBM Corporation
+ *
+ * Modified from bamboo.c for sam440ep:
+ * Copyright 2008 Giuseppe Coviello <gicoviello@gmail.com>
+ */
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc4xx.h>
+#include <linux/i2c.h>
+
+static const struct of_device_id sam440ep_of_bus[] __initconst = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+static int __init sam440ep_device_probe(void)
+{
+ of_platform_bus_probe(NULL, sam440ep_of_bus, NULL);
+
+ return 0;
+}
+machine_device_initcall(sam440ep, sam440ep_device_probe);
+
+static int __init sam440ep_probe(void)
+{
+ if (!of_machine_is_compatible("acube,sam440ep"))
+ return 0;
+
+ pci_set_flags(PCI_REASSIGN_ALL_RSRC);
+
+ return 1;
+}
+
+define_machine(sam440ep) {
+ .name = "Sam440ep",
+ .probe = sam440ep_probe,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
+
+static struct i2c_board_info sam440ep_rtc_info = {
+ .type = "m41st85",
+ .addr = 0x68,
+ .irq = -1,
+};
+
+static int __init sam440ep_setup_rtc(void)
+{
+ return i2c_register_board_info(0, &sam440ep_rtc_info, 1);
+}
+machine_device_initcall(sam440ep, sam440ep_setup_rtc);
diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c
new file mode 100644
index 000000000..665f18e37
--- /dev/null
+++ b/arch/powerpc/platforms/44x/warp.c
@@ -0,0 +1,311 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PIKA Warp(tm) board specific routines
+ *
+ * Copyright (c) 2008-2009 PIKA Technologies
+ * Sean MacLennan <smaclennan@pikatech.com>
+ */
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/kthread.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+#include <asm/dma.h>
+
+
+static const struct of_device_id warp_of_bus[] __initconst = {
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+static int __init warp_device_probe(void)
+{
+ of_platform_bus_probe(NULL, warp_of_bus, NULL);
+ return 0;
+}
+machine_device_initcall(warp, warp_device_probe);
+
+static int __init warp_probe(void)
+{
+ if (!of_machine_is_compatible("pika,warp"))
+ return 0;
+
+ return 1;
+}
+
+define_machine(warp) {
+ .name = "Warp",
+ .probe = warp_probe,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
+
+
+static int __init warp_post_info(void)
+{
+ struct device_node *np;
+ void __iomem *fpga;
+ u32 post1, post2;
+
+ /* Sighhhh... POST information is in the sd area. */
+ np = of_find_compatible_node(NULL, NULL, "pika,fpga-sd");
+ if (np == NULL)
+ return -ENOENT;
+
+ fpga = of_iomap(np, 0);
+ of_node_put(np);
+ if (fpga == NULL)
+ return -ENOENT;
+
+ post1 = in_be32(fpga + 0x40);
+ post2 = in_be32(fpga + 0x44);
+
+ iounmap(fpga);
+
+ if (post1 || post2)
+ printk(KERN_INFO "Warp POST %08x %08x\n", post1, post2);
+ else
+ printk(KERN_INFO "Warp POST OK\n");
+
+ return 0;
+}
+
+
+#ifdef CONFIG_SENSORS_AD7414
+
+static LIST_HEAD(dtm_shutdown_list);
+static void __iomem *dtm_fpga;
+static unsigned green_led, red_led;
+
+
+struct dtm_shutdown {
+ struct list_head list;
+ void (*func)(void *arg);
+ void *arg;
+};
+
+
+int pika_dtm_register_shutdown(void (*func)(void *arg), void *arg)
+{
+ struct dtm_shutdown *shutdown;
+
+ shutdown = kmalloc(sizeof(struct dtm_shutdown), GFP_KERNEL);
+ if (shutdown == NULL)
+ return -ENOMEM;
+
+ shutdown->func = func;
+ shutdown->arg = arg;
+
+ list_add(&shutdown->list, &dtm_shutdown_list);
+
+ return 0;
+}
+
+int pika_dtm_unregister_shutdown(void (*func)(void *arg), void *arg)
+{
+ struct dtm_shutdown *shutdown;
+
+ list_for_each_entry(shutdown, &dtm_shutdown_list, list)
+ if (shutdown->func == func && shutdown->arg == arg) {
+ list_del(&shutdown->list);
+ kfree(shutdown);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static irqreturn_t temp_isr(int irq, void *context)
+{
+ struct dtm_shutdown *shutdown;
+ int value = 1;
+
+ local_irq_disable();
+
+ gpio_set_value(green_led, 0);
+
+ /* Run through the shutdown list. */
+ list_for_each_entry(shutdown, &dtm_shutdown_list, list)
+ shutdown->func(shutdown->arg);
+
+ printk(KERN_EMERG "\n\nCritical Temperature Shutdown\n\n");
+
+ while (1) {
+ if (dtm_fpga) {
+ unsigned reset = in_be32(dtm_fpga + 0x14);
+ out_be32(dtm_fpga + 0x14, reset);
+ }
+
+ gpio_set_value(red_led, value);
+ value ^= 1;
+ mdelay(500);
+ }
+
+ /* Not reached */
+ return IRQ_HANDLED;
+}
+
+static int pika_setup_leds(void)
+{
+ struct device_node *np, *child;
+
+ np = of_find_compatible_node(NULL, NULL, "gpio-leds");
+ if (!np) {
+ printk(KERN_ERR __FILE__ ": Unable to find leds\n");
+ return -ENOENT;
+ }
+
+ for_each_child_of_node(np, child)
+ if (of_node_name_eq(child, "green"))
+ green_led = of_get_gpio(child, 0);
+ else if (of_node_name_eq(child, "red"))
+ red_led = of_get_gpio(child, 0);
+
+ of_node_put(np);
+
+ return 0;
+}
+
+static void pika_setup_critical_temp(struct device_node *np,
+ struct i2c_client *client)
+{
+ int irq, rc;
+
+ /* Do this before enabling critical temp interrupt since we
+ * may immediately interrupt.
+ */
+ pika_setup_leds();
+
+ /* These registers are in 1 degree increments. */
+ i2c_smbus_write_byte_data(client, 2, 65); /* Thigh */
+ i2c_smbus_write_byte_data(client, 3, 0); /* Tlow */
+
+ irq = irq_of_parse_and_map(np, 0);
+ if (!irq) {
+ printk(KERN_ERR __FILE__ ": Unable to get ad7414 irq\n");
+ return;
+ }
+
+ rc = request_irq(irq, temp_isr, 0, "ad7414", NULL);
+ if (rc) {
+ printk(KERN_ERR __FILE__
+ ": Unable to request ad7414 irq %d = %d\n", irq, rc);
+ return;
+ }
+}
+
+static inline void pika_dtm_check_fan(void __iomem *fpga)
+{
+ static int fan_state;
+ u32 fan = in_be32(fpga + 0x34) & (1 << 14);
+
+ if (fan_state != fan) {
+ fan_state = fan;
+ if (fan)
+ printk(KERN_WARNING "Fan rotation error detected."
+ " Please check hardware.\n");
+ }
+}
+
+static int pika_dtm_thread(void __iomem *fpga)
+{
+ struct device_node *np;
+ struct i2c_client *client;
+
+ np = of_find_compatible_node(NULL, NULL, "adi,ad7414");
+ if (np == NULL)
+ return -ENOENT;
+
+ client = of_find_i2c_device_by_node(np);
+ if (client == NULL) {
+ of_node_put(np);
+ return -ENOENT;
+ }
+
+ pika_setup_critical_temp(np, client);
+
+ of_node_put(np);
+
+ printk(KERN_INFO "Warp DTM thread running.\n");
+
+ while (!kthread_should_stop()) {
+ int val;
+
+ val = i2c_smbus_read_word_data(client, 0);
+ if (val < 0)
+ dev_dbg(&client->dev, "DTM read temp failed.\n");
+ else {
+ s16 temp = swab16(val);
+ out_be32(fpga + 0x20, temp);
+ }
+
+ pika_dtm_check_fan(fpga);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ);
+ }
+
+ return 0;
+}
+
+static int __init pika_dtm_start(void)
+{
+ struct task_struct *dtm_thread;
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "pika,fpga");
+ if (np == NULL)
+ return -ENOENT;
+
+ dtm_fpga = of_iomap(np, 0);
+ of_node_put(np);
+ if (dtm_fpga == NULL)
+ return -ENOENT;
+
+ /* Must get post info before thread starts. */
+ warp_post_info();
+
+ dtm_thread = kthread_run(pika_dtm_thread, dtm_fpga, "pika-dtm");
+ if (IS_ERR(dtm_thread)) {
+ iounmap(dtm_fpga);
+ return PTR_ERR(dtm_thread);
+ }
+
+ return 0;
+}
+machine_late_initcall(warp, pika_dtm_start);
+
+#else /* !CONFIG_SENSORS_AD7414 */
+
+int pika_dtm_register_shutdown(void (*func)(void *arg), void *arg)
+{
+ return 0;
+}
+
+int pika_dtm_unregister_shutdown(void (*func)(void *arg), void *arg)
+{
+ return 0;
+}
+
+machine_late_initcall(warp, warp_post_info);
+
+#endif
+
+EXPORT_SYMBOL(pika_dtm_register_shutdown);
+EXPORT_SYMBOL(pika_dtm_unregister_shutdown);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 14:14:47 +0000