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-rw-r--r--arch/mips/ath25/Kconfig18
-rw-r--r--arch/mips/ath25/Makefile16
-rw-r--r--arch/mips/ath25/Platform6
-rw-r--r--arch/mips/ath25/ar2315.c364
-rw-r--r--arch/mips/ath25/ar2315.h23
-rw-r--r--arch/mips/ath25/ar2315_regs.h410
-rw-r--r--arch/mips/ath25/ar5312.c393
-rw-r--r--arch/mips/ath25/ar5312.h23
-rw-r--r--arch/mips/ath25/ar5312_regs.h224
-rw-r--r--arch/mips/ath25/board.c236
-rw-r--r--arch/mips/ath25/devices.c128
-rw-r--r--arch/mips/ath25/devices.h44
-rw-r--r--arch/mips/ath25/early_printk.c45
-rw-r--r--arch/mips/ath25/prom.c26
14 files changed, 1956 insertions, 0 deletions
diff --git a/arch/mips/ath25/Kconfig b/arch/mips/ath25/Kconfig
new file mode 100644
index 000000000..2c1dfd06c
--- /dev/null
+++ b/arch/mips/ath25/Kconfig
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+config SOC_AR5312
+ bool "Atheros AR5312/AR2312+ SoC support"
+ depends on ATH25
+ default y
+
+config SOC_AR2315
+ bool "Atheros AR2315+ SoC support"
+ depends on ATH25
+ default y
+
+config PCI_AR2315
+ bool "Atheros AR2315 PCI controller support"
+ depends on SOC_AR2315
+ select ARCH_HAS_PHYS_TO_DMA
+ select HW_HAS_PCI
+ select PCI
+ default y
diff --git a/arch/mips/ath25/Makefile b/arch/mips/ath25/Makefile
new file mode 100644
index 000000000..eabad7da4
--- /dev/null
+++ b/arch/mips/ath25/Makefile
@@ -0,0 +1,16 @@
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2006 FON Technology, SL.
+# Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+# Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+#
+
+obj-y += board.o prom.o devices.o
+
+obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
+
+obj-$(CONFIG_SOC_AR5312) += ar5312.o
+obj-$(CONFIG_SOC_AR2315) += ar2315.o
diff --git a/arch/mips/ath25/Platform b/arch/mips/ath25/Platform
new file mode 100644
index 000000000..ef3f81fa0
--- /dev/null
+++ b/arch/mips/ath25/Platform
@@ -0,0 +1,6 @@
+#
+# Atheros AR531X/AR231X WiSoC
+#
+platform-$(CONFIG_ATH25) += ath25/
+cflags-$(CONFIG_ATH25) += -I$(srctree)/arch/mips/include/asm/mach-ath25
+load-$(CONFIG_ATH25) += 0xffffffff80041000
diff --git a/arch/mips/ath25/ar2315.c b/arch/mips/ath25/ar2315.c
new file mode 100644
index 000000000..8da996142
--- /dev/null
+++ b/arch/mips/ath25/ar2315.c
@@ -0,0 +1,364 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com>
+ */
+
+/*
+ * Platform devices for Atheros AR2315 SoCs
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/irqdomain.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <asm/bootinfo.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+
+#include <ath25_platform.h>
+
+#include "devices.h"
+#include "ar2315.h"
+#include "ar2315_regs.h"
+
+static void __iomem *ar2315_rst_base;
+static struct irq_domain *ar2315_misc_irq_domain;
+
+static inline u32 ar2315_rst_reg_read(u32 reg)
+{
+ return __raw_readl(ar2315_rst_base + reg);
+}
+
+static inline void ar2315_rst_reg_write(u32 reg, u32 val)
+{
+ __raw_writel(val, ar2315_rst_base + reg);
+}
+
+static inline void ar2315_rst_reg_mask(u32 reg, u32 mask, u32 val)
+{
+ u32 ret = ar2315_rst_reg_read(reg);
+
+ ret &= ~mask;
+ ret |= val;
+ ar2315_rst_reg_write(reg, ret);
+}
+
+static irqreturn_t ar2315_ahb_err_handler(int cpl, void *dev_id)
+{
+ ar2315_rst_reg_write(AR2315_AHB_ERR0, AR2315_AHB_ERROR_DET);
+ ar2315_rst_reg_read(AR2315_AHB_ERR1);
+
+ pr_emerg("AHB fatal error\n");
+ machine_restart("AHB error"); /* Catastrophic failure */
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction ar2315_ahb_err_interrupt = {
+ .handler = ar2315_ahb_err_handler,
+ .name = "ar2315-ahb-error",
+};
+
+static void ar2315_misc_irq_handler(struct irq_desc *desc)
+{
+ u32 pending = ar2315_rst_reg_read(AR2315_ISR) &
+ ar2315_rst_reg_read(AR2315_IMR);
+ unsigned nr, misc_irq = 0;
+
+ if (pending) {
+ struct irq_domain *domain = irq_desc_get_handler_data(desc);
+
+ nr = __ffs(pending);
+ misc_irq = irq_find_mapping(domain, nr);
+ }
+
+ if (misc_irq) {
+ if (nr == AR2315_MISC_IRQ_GPIO)
+ ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_GPIO);
+ else if (nr == AR2315_MISC_IRQ_WATCHDOG)
+ ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_WD);
+ generic_handle_irq(misc_irq);
+ } else {
+ spurious_interrupt();
+ }
+}
+
+static void ar2315_misc_irq_unmask(struct irq_data *d)
+{
+ ar2315_rst_reg_mask(AR2315_IMR, 0, BIT(d->hwirq));
+}
+
+static void ar2315_misc_irq_mask(struct irq_data *d)
+{
+ ar2315_rst_reg_mask(AR2315_IMR, BIT(d->hwirq), 0);
+}
+
+static struct irq_chip ar2315_misc_irq_chip = {
+ .name = "ar2315-misc",
+ .irq_unmask = ar2315_misc_irq_unmask,
+ .irq_mask = ar2315_misc_irq_mask,
+};
+
+static int ar2315_misc_irq_map(struct irq_domain *d, unsigned irq,
+ irq_hw_number_t hw)
+{
+ irq_set_chip_and_handler(irq, &ar2315_misc_irq_chip, handle_level_irq);
+ return 0;
+}
+
+static struct irq_domain_ops ar2315_misc_irq_domain_ops = {
+ .map = ar2315_misc_irq_map,
+};
+
+/*
+ * Called when an interrupt is received, this function
+ * determines exactly which interrupt it was, and it
+ * invokes the appropriate handler.
+ *
+ * Implicitly, we also define interrupt priority by
+ * choosing which to dispatch first.
+ */
+static void ar2315_irq_dispatch(void)
+{
+ u32 pending = read_c0_status() & read_c0_cause();
+
+ if (pending & CAUSEF_IP3)
+ do_IRQ(AR2315_IRQ_WLAN0);
+#ifdef CONFIG_PCI_AR2315
+ else if (pending & CAUSEF_IP5)
+ do_IRQ(AR2315_IRQ_LCBUS_PCI);
+#endif
+ else if (pending & CAUSEF_IP2)
+ do_IRQ(AR2315_IRQ_MISC);
+ else if (pending & CAUSEF_IP7)
+ do_IRQ(ATH25_IRQ_CPU_CLOCK);
+ else
+ spurious_interrupt();
+}
+
+void __init ar2315_arch_init_irq(void)
+{
+ struct irq_domain *domain;
+ unsigned irq;
+
+ ath25_irq_dispatch = ar2315_irq_dispatch;
+
+ domain = irq_domain_add_linear(NULL, AR2315_MISC_IRQ_COUNT,
+ &ar2315_misc_irq_domain_ops, NULL);
+ if (!domain)
+ panic("Failed to add IRQ domain");
+
+ irq = irq_create_mapping(domain, AR2315_MISC_IRQ_AHB);
+ setup_irq(irq, &ar2315_ahb_err_interrupt);
+
+ irq_set_chained_handler_and_data(AR2315_IRQ_MISC,
+ ar2315_misc_irq_handler, domain);
+
+ ar2315_misc_irq_domain = domain;
+}
+
+void __init ar2315_init_devices(void)
+{
+ /* Find board configuration */
+ ath25_find_config(AR2315_SPI_READ_BASE, AR2315_SPI_READ_SIZE);
+
+ ath25_add_wmac(0, AR2315_WLAN0_BASE, AR2315_IRQ_WLAN0);
+}
+
+static void ar2315_restart(char *command)
+{
+ void (*mips_reset_vec)(void) = (void *)0xbfc00000;
+
+ local_irq_disable();
+
+ /* try reset the system via reset control */
+ ar2315_rst_reg_write(AR2315_COLD_RESET, AR2317_RESET_SYSTEM);
+
+ /* Cold reset does not work on the AR2315/6, use the GPIO reset bits
+ * a workaround. Give it some time to attempt a gpio based hardware
+ * reset (atheros reference design workaround) */
+
+ /* TODO: implement the GPIO reset workaround */
+
+ /* Some boards (e.g. Senao EOC-2610) don't implement the reset logic
+ * workaround. Attempt to jump to the mips reset location -
+ * the boot loader itself might be able to recover the system */
+ mips_reset_vec();
+}
+
+/*
+ * This table is indexed by bits 5..4 of the CLOCKCTL1 register
+ * to determine the predevisor value.
+ */
+static int clockctl1_predivide_table[4] __initdata = { 1, 2, 4, 5 };
+static int pllc_divide_table[5] __initdata = { 2, 3, 4, 6, 3 };
+
+static unsigned __init ar2315_sys_clk(u32 clock_ctl)
+{
+ unsigned int pllc_ctrl, cpu_div;
+ unsigned int pllc_out, refdiv, fdiv, divby2;
+ unsigned int clk_div;
+
+ pllc_ctrl = ar2315_rst_reg_read(AR2315_PLLC_CTL);
+ refdiv = ATH25_REG_MS(pllc_ctrl, AR2315_PLLC_REF_DIV);
+ refdiv = clockctl1_predivide_table[refdiv];
+ fdiv = ATH25_REG_MS(pllc_ctrl, AR2315_PLLC_FDBACK_DIV);
+ divby2 = ATH25_REG_MS(pllc_ctrl, AR2315_PLLC_ADD_FDBACK_DIV) + 1;
+ pllc_out = (40000000 / refdiv) * (2 * divby2) * fdiv;
+
+ /* clkm input selected */
+ switch (clock_ctl & AR2315_CPUCLK_CLK_SEL_M) {
+ case 0:
+ case 1:
+ clk_div = ATH25_REG_MS(pllc_ctrl, AR2315_PLLC_CLKM_DIV);
+ clk_div = pllc_divide_table[clk_div];
+ break;
+ case 2:
+ clk_div = ATH25_REG_MS(pllc_ctrl, AR2315_PLLC_CLKC_DIV);
+ clk_div = pllc_divide_table[clk_div];
+ break;
+ default:
+ pllc_out = 40000000;
+ clk_div = 1;
+ break;
+ }
+
+ cpu_div = ATH25_REG_MS(clock_ctl, AR2315_CPUCLK_CLK_DIV);
+ cpu_div = cpu_div * 2 ?: 1;
+
+ return pllc_out / (clk_div * cpu_div);
+}
+
+static inline unsigned ar2315_cpu_frequency(void)
+{
+ return ar2315_sys_clk(ar2315_rst_reg_read(AR2315_CPUCLK));
+}
+
+static inline unsigned ar2315_apb_frequency(void)
+{
+ return ar2315_sys_clk(ar2315_rst_reg_read(AR2315_AMBACLK));
+}
+
+void __init ar2315_plat_time_init(void)
+{
+ mips_hpt_frequency = ar2315_cpu_frequency() / 2;
+}
+
+void __init ar2315_plat_mem_setup(void)
+{
+ void __iomem *sdram_base;
+ u32 memsize, memcfg;
+ u32 devid;
+ u32 config;
+
+ /* Detect memory size */
+ sdram_base = ioremap_nocache(AR2315_SDRAMCTL_BASE,
+ AR2315_SDRAMCTL_SIZE);
+ memcfg = __raw_readl(sdram_base + AR2315_MEM_CFG);
+ memsize = 1 + ATH25_REG_MS(memcfg, AR2315_MEM_CFG_DATA_WIDTH);
+ memsize <<= 1 + ATH25_REG_MS(memcfg, AR2315_MEM_CFG_COL_WIDTH);
+ memsize <<= 1 + ATH25_REG_MS(memcfg, AR2315_MEM_CFG_ROW_WIDTH);
+ memsize <<= 3;
+ add_memory_region(0, memsize, BOOT_MEM_RAM);
+ iounmap(sdram_base);
+
+ ar2315_rst_base = ioremap_nocache(AR2315_RST_BASE, AR2315_RST_SIZE);
+
+ /* Detect the hardware based on the device ID */
+ devid = ar2315_rst_reg_read(AR2315_SREV) & AR2315_REV_CHIP;
+ switch (devid) {
+ case 0x91: /* Need to check */
+ ath25_soc = ATH25_SOC_AR2318;
+ break;
+ case 0x90:
+ ath25_soc = ATH25_SOC_AR2317;
+ break;
+ case 0x87:
+ ath25_soc = ATH25_SOC_AR2316;
+ break;
+ case 0x86:
+ default:
+ ath25_soc = ATH25_SOC_AR2315;
+ break;
+ }
+ ath25_board.devid = devid;
+
+ /* Clear any lingering AHB errors */
+ config = read_c0_config();
+ write_c0_config(config & ~0x3);
+ ar2315_rst_reg_write(AR2315_AHB_ERR0, AR2315_AHB_ERROR_DET);
+ ar2315_rst_reg_read(AR2315_AHB_ERR1);
+ ar2315_rst_reg_write(AR2315_WDT_CTRL, AR2315_WDT_CTRL_IGNORE);
+
+ _machine_restart = ar2315_restart;
+}
+
+#ifdef CONFIG_PCI_AR2315
+static struct resource ar2315_pci_res[] = {
+ {
+ .name = "ar2315-pci-ctrl",
+ .flags = IORESOURCE_MEM,
+ .start = AR2315_PCI_BASE,
+ .end = AR2315_PCI_BASE + AR2315_PCI_SIZE - 1,
+ },
+ {
+ .name = "ar2315-pci-ext",
+ .flags = IORESOURCE_MEM,
+ .start = AR2315_PCI_EXT_BASE,
+ .end = AR2315_PCI_EXT_BASE + AR2315_PCI_EXT_SIZE - 1,
+ },
+ {
+ .name = "ar2315-pci",
+ .flags = IORESOURCE_IRQ,
+ .start = AR2315_IRQ_LCBUS_PCI,
+ .end = AR2315_IRQ_LCBUS_PCI,
+ },
+};
+#endif
+
+void __init ar2315_arch_init(void)
+{
+ unsigned irq = irq_create_mapping(ar2315_misc_irq_domain,
+ AR2315_MISC_IRQ_UART0);
+
+ ath25_serial_setup(AR2315_UART0_BASE, irq, ar2315_apb_frequency());
+
+#ifdef CONFIG_PCI_AR2315
+ if (ath25_soc == ATH25_SOC_AR2315) {
+ /* Reset PCI DMA logic */
+ ar2315_rst_reg_mask(AR2315_RESET, 0, AR2315_RESET_PCIDMA);
+ msleep(20);
+ ar2315_rst_reg_mask(AR2315_RESET, AR2315_RESET_PCIDMA, 0);
+ msleep(20);
+
+ /* Configure endians */
+ ar2315_rst_reg_mask(AR2315_ENDIAN_CTL, 0, AR2315_CONFIG_PCIAHB |
+ AR2315_CONFIG_PCIAHB_BRIDGE);
+
+ /* Configure as PCI host with DMA */
+ ar2315_rst_reg_write(AR2315_PCICLK, AR2315_PCICLK_PLLC_CLKM |
+ (AR2315_PCICLK_IN_FREQ_DIV_6 <<
+ AR2315_PCICLK_DIV_S));
+ ar2315_rst_reg_mask(AR2315_AHB_ARB_CTL, 0, AR2315_ARB_PCI);
+ ar2315_rst_reg_mask(AR2315_IF_CTL, AR2315_IF_PCI_CLK_MASK |
+ AR2315_IF_MASK, AR2315_IF_PCI |
+ AR2315_IF_PCI_HOST | AR2315_IF_PCI_INTR |
+ (AR2315_IF_PCI_CLK_OUTPUT_CLK <<
+ AR2315_IF_PCI_CLK_SHIFT));
+
+ platform_device_register_simple("ar2315-pci", -1,
+ ar2315_pci_res,
+ ARRAY_SIZE(ar2315_pci_res));
+ }
+#endif
+}
diff --git a/arch/mips/ath25/ar2315.h b/arch/mips/ath25/ar2315.h
new file mode 100644
index 000000000..fccc64f6d
--- /dev/null
+++ b/arch/mips/ath25/ar2315.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __AR2315_H
+#define __AR2315_H
+
+#ifdef CONFIG_SOC_AR2315
+
+void ar2315_arch_init_irq(void);
+void ar2315_init_devices(void);
+void ar2315_plat_time_init(void);
+void ar2315_plat_mem_setup(void);
+void ar2315_arch_init(void);
+
+#else
+
+static inline void ar2315_arch_init_irq(void) {}
+static inline void ar2315_init_devices(void) {}
+static inline void ar2315_plat_time_init(void) {}
+static inline void ar2315_plat_mem_setup(void) {}
+static inline void ar2315_arch_init(void) {}
+
+#endif
+
+#endif /* __AR2315_H */
diff --git a/arch/mips/ath25/ar2315_regs.h b/arch/mips/ath25/ar2315_regs.h
new file mode 100644
index 000000000..16e86149c
--- /dev/null
+++ b/arch/mips/ath25/ar2315_regs.h
@@ -0,0 +1,410 @@
+/*
+ * Register definitions for AR2315+
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2008 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#ifndef __ASM_MACH_ATH25_AR2315_REGS_H
+#define __ASM_MACH_ATH25_AR2315_REGS_H
+
+/*
+ * IRQs
+ */
+#define AR2315_IRQ_MISC (MIPS_CPU_IRQ_BASE + 2) /* C0_CAUSE: 0x0400 */
+#define AR2315_IRQ_WLAN0 (MIPS_CPU_IRQ_BASE + 3) /* C0_CAUSE: 0x0800 */
+#define AR2315_IRQ_ENET0 (MIPS_CPU_IRQ_BASE + 4) /* C0_CAUSE: 0x1000 */
+#define AR2315_IRQ_LCBUS_PCI (MIPS_CPU_IRQ_BASE + 5) /* C0_CAUSE: 0x2000 */
+#define AR2315_IRQ_WLAN0_POLL (MIPS_CPU_IRQ_BASE + 6) /* C0_CAUSE: 0x4000 */
+
+/*
+ * Miscellaneous interrupts, which share IP2.
+ */
+#define AR2315_MISC_IRQ_UART0 0
+#define AR2315_MISC_IRQ_I2C_RSVD 1
+#define AR2315_MISC_IRQ_SPI 2
+#define AR2315_MISC_IRQ_AHB 3
+#define AR2315_MISC_IRQ_APB 4
+#define AR2315_MISC_IRQ_TIMER 5
+#define AR2315_MISC_IRQ_GPIO 6
+#define AR2315_MISC_IRQ_WATCHDOG 7
+#define AR2315_MISC_IRQ_IR_RSVD 8
+#define AR2315_MISC_IRQ_COUNT 9
+
+/*
+ * Address map
+ */
+#define AR2315_SPI_READ_BASE 0x08000000 /* SPI flash */
+#define AR2315_SPI_READ_SIZE 0x01000000
+#define AR2315_WLAN0_BASE 0x10000000 /* Wireless MMR */
+#define AR2315_PCI_BASE 0x10100000 /* PCI MMR */
+#define AR2315_PCI_SIZE 0x00001000
+#define AR2315_SDRAMCTL_BASE 0x10300000 /* SDRAM MMR */
+#define AR2315_SDRAMCTL_SIZE 0x00000020
+#define AR2315_LOCAL_BASE 0x10400000 /* Local bus MMR */
+#define AR2315_ENET0_BASE 0x10500000 /* Ethernet MMR */
+#define AR2315_RST_BASE 0x11000000 /* Reset control MMR */
+#define AR2315_RST_SIZE 0x00000100
+#define AR2315_UART0_BASE 0x11100000 /* UART MMR */
+#define AR2315_SPI_MMR_BASE 0x11300000 /* SPI flash MMR */
+#define AR2315_SPI_MMR_SIZE 0x00000010
+#define AR2315_PCI_EXT_BASE 0x80000000 /* PCI external */
+#define AR2315_PCI_EXT_SIZE 0x40000000
+
+/*
+ * Configuration registers
+ */
+
+/* Cold reset register */
+#define AR2315_COLD_RESET 0x0000
+
+#define AR2315_RESET_COLD_AHB 0x00000001
+#define AR2315_RESET_COLD_APB 0x00000002
+#define AR2315_RESET_COLD_CPU 0x00000004
+#define AR2315_RESET_COLD_CPUWARM 0x00000008
+#define AR2315_RESET_SYSTEM (RESET_COLD_CPU |\
+ RESET_COLD_APB |\
+ RESET_COLD_AHB) /* full system */
+#define AR2317_RESET_SYSTEM 0x00000010
+
+/* Reset register */
+#define AR2315_RESET 0x0004
+
+#define AR2315_RESET_WARM_WLAN0_MAC 0x00000001 /* warm reset WLAN0 MAC */
+#define AR2315_RESET_WARM_WLAN0_BB 0x00000002 /* warm reset WLAN0 BB */
+#define AR2315_RESET_MPEGTS_RSVD 0x00000004 /* warm reset MPEG-TS */
+#define AR2315_RESET_PCIDMA 0x00000008 /* warm reset PCI ahb/dma */
+#define AR2315_RESET_MEMCTL 0x00000010 /* warm reset mem control */
+#define AR2315_RESET_LOCAL 0x00000020 /* warm reset local bus */
+#define AR2315_RESET_I2C_RSVD 0x00000040 /* warm reset I2C bus */
+#define AR2315_RESET_SPI 0x00000080 /* warm reset SPI iface */
+#define AR2315_RESET_UART0 0x00000100 /* warm reset UART0 */
+#define AR2315_RESET_IR_RSVD 0x00000200 /* warm reset IR iface */
+#define AR2315_RESET_EPHY0 0x00000400 /* cold reset ENET0 phy */
+#define AR2315_RESET_ENET0 0x00000800 /* cold reset ENET0 MAC */
+
+/* AHB master arbitration control */
+#define AR2315_AHB_ARB_CTL 0x0008
+
+#define AR2315_ARB_CPU 0x00000001 /* CPU, default */
+#define AR2315_ARB_WLAN 0x00000002 /* WLAN */
+#define AR2315_ARB_MPEGTS_RSVD 0x00000004 /* MPEG-TS */
+#define AR2315_ARB_LOCAL 0x00000008 /* Local bus */
+#define AR2315_ARB_PCI 0x00000010 /* PCI bus */
+#define AR2315_ARB_ETHERNET 0x00000020 /* Ethernet */
+#define AR2315_ARB_RETRY 0x00000100 /* Retry policy (debug) */
+
+/* Config Register */
+#define AR2315_ENDIAN_CTL 0x000c
+
+#define AR2315_CONFIG_AHB 0x00000001 /* EC-AHB bridge endian */
+#define AR2315_CONFIG_WLAN 0x00000002 /* WLAN byteswap */
+#define AR2315_CONFIG_MPEGTS_RSVD 0x00000004 /* MPEG-TS byteswap */
+#define AR2315_CONFIG_PCI 0x00000008 /* PCI byteswap */
+#define AR2315_CONFIG_MEMCTL 0x00000010 /* Mem controller endian */
+#define AR2315_CONFIG_LOCAL 0x00000020 /* Local bus byteswap */
+#define AR2315_CONFIG_ETHERNET 0x00000040 /* Ethernet byteswap */
+#define AR2315_CONFIG_MERGE 0x00000200 /* CPU write buffer merge */
+#define AR2315_CONFIG_CPU 0x00000400 /* CPU big endian */
+#define AR2315_CONFIG_BIG 0x00000400
+#define AR2315_CONFIG_PCIAHB 0x00000800
+#define AR2315_CONFIG_PCIAHB_BRIDGE 0x00001000
+#define AR2315_CONFIG_SPI 0x00008000 /* SPI byteswap */
+#define AR2315_CONFIG_CPU_DRAM 0x00010000
+#define AR2315_CONFIG_CPU_PCI 0x00020000
+#define AR2315_CONFIG_CPU_MMR 0x00040000
+
+/* NMI control */
+#define AR2315_NMI_CTL 0x0010
+
+#define AR2315_NMI_EN 1
+
+/* Revision Register - Initial value is 0x3010 (WMAC 3.0, AR231X 1.0). */
+#define AR2315_SREV 0x0014
+
+#define AR2315_REV_MAJ 0x000000f0
+#define AR2315_REV_MAJ_S 4
+#define AR2315_REV_MIN 0x0000000f
+#define AR2315_REV_MIN_S 0
+#define AR2315_REV_CHIP (AR2315_REV_MAJ | AR2315_REV_MIN)
+
+/* Interface Enable */
+#define AR2315_IF_CTL 0x0018
+
+#define AR2315_IF_MASK 0x00000007
+#define AR2315_IF_DISABLED 0 /* Disable all */
+#define AR2315_IF_PCI 1 /* PCI */
+#define AR2315_IF_TS_LOCAL 2 /* Local bus */
+#define AR2315_IF_ALL 3 /* Emulation only */
+#define AR2315_IF_LOCAL_HOST 0x00000008
+#define AR2315_IF_PCI_HOST 0x00000010
+#define AR2315_IF_PCI_INTR 0x00000020
+#define AR2315_IF_PCI_CLK_MASK 0x00030000
+#define AR2315_IF_PCI_CLK_INPUT 0
+#define AR2315_IF_PCI_CLK_OUTPUT_LOW 1
+#define AR2315_IF_PCI_CLK_OUTPUT_CLK 2
+#define AR2315_IF_PCI_CLK_OUTPUT_HIGH 3
+#define AR2315_IF_PCI_CLK_SHIFT 16
+
+/* APB Interrupt control */
+#define AR2315_ISR 0x0020
+#define AR2315_IMR 0x0024
+#define AR2315_GISR 0x0028
+
+#define AR2315_ISR_UART0 0x00000001 /* high speed UART */
+#define AR2315_ISR_I2C_RSVD 0x00000002 /* I2C bus */
+#define AR2315_ISR_SPI 0x00000004 /* SPI bus */
+#define AR2315_ISR_AHB 0x00000008 /* AHB error */
+#define AR2315_ISR_APB 0x00000010 /* APB error */
+#define AR2315_ISR_TIMER 0x00000020 /* Timer */
+#define AR2315_ISR_GPIO 0x00000040 /* GPIO */
+#define AR2315_ISR_WD 0x00000080 /* Watchdog */
+#define AR2315_ISR_IR_RSVD 0x00000100 /* IR */
+
+#define AR2315_GISR_MISC 0x00000001 /* Misc */
+#define AR2315_GISR_WLAN0 0x00000002 /* WLAN0 */
+#define AR2315_GISR_MPEGTS_RSVD 0x00000004 /* MPEG-TS */
+#define AR2315_GISR_LOCALPCI 0x00000008 /* Local/PCI bus */
+#define AR2315_GISR_WMACPOLL 0x00000010
+#define AR2315_GISR_TIMER 0x00000020
+#define AR2315_GISR_ETHERNET 0x00000040 /* Ethernet */
+
+/* Generic timer */
+#define AR2315_TIMER 0x0030
+#define AR2315_RELOAD 0x0034
+
+/* Watchdog timer */
+#define AR2315_WDT_TIMER 0x0038
+#define AR2315_WDT_CTRL 0x003c
+
+#define AR2315_WDT_CTRL_IGNORE 0x00000000 /* ignore expiration */
+#define AR2315_WDT_CTRL_NMI 0x00000001 /* NMI on watchdog */
+#define AR2315_WDT_CTRL_RESET 0x00000002 /* reset on watchdog */
+
+/* CPU Performance Counters */
+#define AR2315_PERFCNT0 0x0048
+#define AR2315_PERFCNT1 0x004c
+
+#define AR2315_PERF0_DATAHIT 0x00000001 /* Count Data Cache Hits */
+#define AR2315_PERF0_DATAMISS 0x00000002 /* Count Data Cache Misses */
+#define AR2315_PERF0_INSTHIT 0x00000004 /* Count Instruction Cache Hits */
+#define AR2315_PERF0_INSTMISS 0x00000008 /* Count Instruction Cache Misses */
+#define AR2315_PERF0_ACTIVE 0x00000010 /* Count Active Processor Cycles */
+#define AR2315_PERF0_WBHIT 0x00000020 /* Count CPU Write Buffer Hits */
+#define AR2315_PERF0_WBMISS 0x00000040 /* Count CPU Write Buffer Misses */
+
+#define AR2315_PERF1_EB_ARDY 0x00000001 /* Count EB_ARdy signal */
+#define AR2315_PERF1_EB_AVALID 0x00000002 /* Count EB_AValid signal */
+#define AR2315_PERF1_EB_WDRDY 0x00000004 /* Count EB_WDRdy signal */
+#define AR2315_PERF1_EB_RDVAL 0x00000008 /* Count EB_RdVal signal */
+#define AR2315_PERF1_VRADDR 0x00000010 /* Count valid read address cycles*/
+#define AR2315_PERF1_VWADDR 0x00000020 /* Count valid write address cycl.*/
+#define AR2315_PERF1_VWDATA 0x00000040 /* Count valid write data cycles */
+
+/* AHB Error Reporting */
+#define AR2315_AHB_ERR0 0x0050 /* error */
+#define AR2315_AHB_ERR1 0x0054 /* haddr */
+#define AR2315_AHB_ERR2 0x0058 /* hwdata */
+#define AR2315_AHB_ERR3 0x005c /* hrdata */
+#define AR2315_AHB_ERR4 0x0060 /* status */
+
+#define AR2315_AHB_ERROR_DET 1 /* AHB Error has been detected, */
+ /* write 1 to clear all bits in ERR0 */
+#define AR2315_AHB_ERROR_OVR 2 /* AHB Error overflow has been detected */
+#define AR2315_AHB_ERROR_WDT 4 /* AHB Error due to wdt instead of hresp */
+
+#define AR2315_PROCERR_HMAST 0x0000000f
+#define AR2315_PROCERR_HMAST_DFLT 0
+#define AR2315_PROCERR_HMAST_WMAC 1
+#define AR2315_PROCERR_HMAST_ENET 2
+#define AR2315_PROCERR_HMAST_PCIENDPT 3
+#define AR2315_PROCERR_HMAST_LOCAL 4
+#define AR2315_PROCERR_HMAST_CPU 5
+#define AR2315_PROCERR_HMAST_PCITGT 6
+#define AR2315_PROCERR_HMAST_S 0
+#define AR2315_PROCERR_HWRITE 0x00000010
+#define AR2315_PROCERR_HSIZE 0x00000060
+#define AR2315_PROCERR_HSIZE_S 5
+#define AR2315_PROCERR_HTRANS 0x00000180
+#define AR2315_PROCERR_HTRANS_S 7
+#define AR2315_PROCERR_HBURST 0x00000e00
+#define AR2315_PROCERR_HBURST_S 9
+
+/* Clock Control */
+#define AR2315_PLLC_CTL 0x0064
+#define AR2315_PLLV_CTL 0x0068
+#define AR2315_CPUCLK 0x006c
+#define AR2315_AMBACLK 0x0070
+#define AR2315_SYNCCLK 0x0074
+#define AR2315_DSL_SLEEP_CTL 0x0080
+#define AR2315_DSL_SLEEP_DUR 0x0084
+
+/* PLLc Control fields */
+#define AR2315_PLLC_REF_DIV_M 0x00000003
+#define AR2315_PLLC_REF_DIV_S 0
+#define AR2315_PLLC_FDBACK_DIV_M 0x0000007c
+#define AR2315_PLLC_FDBACK_DIV_S 2
+#define AR2315_PLLC_ADD_FDBACK_DIV_M 0x00000080
+#define AR2315_PLLC_ADD_FDBACK_DIV_S 7
+#define AR2315_PLLC_CLKC_DIV_M 0x0001c000
+#define AR2315_PLLC_CLKC_DIV_S 14
+#define AR2315_PLLC_CLKM_DIV_M 0x00700000
+#define AR2315_PLLC_CLKM_DIV_S 20
+
+/* CPU CLK Control fields */
+#define AR2315_CPUCLK_CLK_SEL_M 0x00000003
+#define AR2315_CPUCLK_CLK_SEL_S 0
+#define AR2315_CPUCLK_CLK_DIV_M 0x0000000c
+#define AR2315_CPUCLK_CLK_DIV_S 2
+
+/* AMBA CLK Control fields */
+#define AR2315_AMBACLK_CLK_SEL_M 0x00000003
+#define AR2315_AMBACLK_CLK_SEL_S 0
+#define AR2315_AMBACLK_CLK_DIV_M 0x0000000c
+#define AR2315_AMBACLK_CLK_DIV_S 2
+
+/* PCI Clock Control */
+#define AR2315_PCICLK 0x00a4
+
+#define AR2315_PCICLK_INPUT_M 0x00000003
+#define AR2315_PCICLK_INPUT_S 0
+#define AR2315_PCICLK_PLLC_CLKM 0
+#define AR2315_PCICLK_PLLC_CLKM1 1
+#define AR2315_PCICLK_PLLC_CLKC 2
+#define AR2315_PCICLK_REF_CLK 3
+#define AR2315_PCICLK_DIV_M 0x0000000c
+#define AR2315_PCICLK_DIV_S 2
+#define AR2315_PCICLK_IN_FREQ 0
+#define AR2315_PCICLK_IN_FREQ_DIV_6 1
+#define AR2315_PCICLK_IN_FREQ_DIV_8 2
+#define AR2315_PCICLK_IN_FREQ_DIV_10 3
+
+/* Observation Control Register */
+#define AR2315_OCR 0x00b0
+
+#define AR2315_OCR_GPIO0_IRIN 0x00000040
+#define AR2315_OCR_GPIO1_IROUT 0x00000080
+#define AR2315_OCR_GPIO3_RXCLR 0x00000200
+
+/* General Clock Control */
+#define AR2315_MISCCLK 0x00b4
+
+#define AR2315_MISCCLK_PLLBYPASS_EN 0x00000001
+#define AR2315_MISCCLK_PROCREFCLK 0x00000002
+
+/*
+ * SDRAM Controller
+ * - No read or write buffers are included.
+ */
+#define AR2315_MEM_CFG 0x0000
+#define AR2315_MEM_CTRL 0x000c
+#define AR2315_MEM_REF 0x0010
+
+#define AR2315_MEM_CFG_DATA_WIDTH_M 0x00006000
+#define AR2315_MEM_CFG_DATA_WIDTH_S 13
+#define AR2315_MEM_CFG_COL_WIDTH_M 0x00001e00
+#define AR2315_MEM_CFG_COL_WIDTH_S 9
+#define AR2315_MEM_CFG_ROW_WIDTH_M 0x000001e0
+#define AR2315_MEM_CFG_ROW_WIDTH_S 5
+#define AR2315_MEM_CFG_BANKADDR_BITS_M 0x00000018
+#define AR2315_MEM_CFG_BANKADDR_BITS_S 3
+
+/*
+ * Local Bus Interface Registers
+ */
+#define AR2315_LB_CONFIG 0x0000
+
+#define AR2315_LBCONF_OE 0x00000001 /* =1 OE is low-true */
+#define AR2315_LBCONF_CS0 0x00000002 /* =1 first CS is low-true */
+#define AR2315_LBCONF_CS1 0x00000004 /* =1 2nd CS is low-true */
+#define AR2315_LBCONF_RDY 0x00000008 /* =1 RDY is low-true */
+#define AR2315_LBCONF_WE 0x00000010 /* =1 Write En is low-true */
+#define AR2315_LBCONF_WAIT 0x00000020 /* =1 WAIT is low-true */
+#define AR2315_LBCONF_ADS 0x00000040 /* =1 Adr Strobe is low-true */
+#define AR2315_LBCONF_MOT 0x00000080 /* =0 Intel, =1 Motorola */
+#define AR2315_LBCONF_8CS 0x00000100 /* =1 8 bits CS, 0= 16bits */
+#define AR2315_LBCONF_8DS 0x00000200 /* =1 8 bits Data S, 0=16bits */
+#define AR2315_LBCONF_ADS_EN 0x00000400 /* =1 Enable ADS */
+#define AR2315_LBCONF_ADR_OE 0x00000800 /* =1 Adr cap on OE, WE or DS */
+#define AR2315_LBCONF_ADDT_MUX 0x00001000 /* =1 Adr and Data share bus */
+#define AR2315_LBCONF_DATA_OE 0x00002000 /* =1 Data cap on OE, WE, DS */
+#define AR2315_LBCONF_16DATA 0x00004000 /* =1 Data is 16 bits wide */
+#define AR2315_LBCONF_SWAPDT 0x00008000 /* =1 Byte swap data */
+#define AR2315_LBCONF_SYNC 0x00010000 /* =1 Bus synchronous to clk */
+#define AR2315_LBCONF_INT 0x00020000 /* =1 Intr is low true */
+#define AR2315_LBCONF_INT_CTR0 0x00000000 /* GND high-Z, Vdd is high-Z */
+#define AR2315_LBCONF_INT_CTR1 0x00040000 /* GND drive, Vdd is high-Z */
+#define AR2315_LBCONF_INT_CTR2 0x00080000 /* GND high-Z, Vdd drive */
+#define AR2315_LBCONF_INT_CTR3 0x000c0000 /* GND drive, Vdd drive */
+#define AR2315_LBCONF_RDY_WAIT 0x00100000 /* =1 RDY is negative of WAIT */
+#define AR2315_LBCONF_INT_PULSE 0x00200000 /* =1 Interrupt is a pulse */
+#define AR2315_LBCONF_ENABLE 0x00400000 /* =1 Falcon respond to LB */
+
+#define AR2315_LB_CLKSEL 0x0004
+
+#define AR2315_LBCLK_EXT 0x00000001 /* use external clk for lb */
+
+#define AR2315_LB_1MS 0x0008
+
+#define AR2315_LB1MS_MASK 0x0003ffff /* # of AHB clk cycles in 1ms */
+
+#define AR2315_LB_MISCCFG 0x000c
+
+#define AR2315_LBM_TXD_EN 0x00000001 /* Enable TXD for fragments */
+#define AR2315_LBM_RX_INTEN 0x00000002 /* Enable LB ints on RX ready */
+#define AR2315_LBM_MBOXWR_INTEN 0x00000004 /* Enable LB ints on mbox wr */
+#define AR2315_LBM_MBOXRD_INTEN 0x00000008 /* Enable LB ints on mbox rd */
+#define AR2315_LMB_DESCSWAP_EN 0x00000010 /* Byte swap desc enable */
+#define AR2315_LBM_TIMEOUT_M 0x00ffff80
+#define AR2315_LBM_TIMEOUT_S 7
+#define AR2315_LBM_PORTMUX 0x07000000
+
+#define AR2315_LB_RXTSOFF 0x0010
+
+#define AR2315_LB_TX_CHAIN_EN 0x0100
+
+#define AR2315_LB_TXEN_0 0x00000001
+#define AR2315_LB_TXEN_1 0x00000002
+#define AR2315_LB_TXEN_2 0x00000004
+#define AR2315_LB_TXEN_3 0x00000008
+
+#define AR2315_LB_TX_CHAIN_DIS 0x0104
+#define AR2315_LB_TX_DESC_PTR 0x0200
+
+#define AR2315_LB_RX_CHAIN_EN 0x0400
+
+#define AR2315_LB_RXEN 0x00000001
+
+#define AR2315_LB_RX_CHAIN_DIS 0x0404
+#define AR2315_LB_RX_DESC_PTR 0x0408
+
+#define AR2315_LB_INT_STATUS 0x0500
+
+#define AR2315_LB_INT_TX_DESC 0x00000001
+#define AR2315_LB_INT_TX_OK 0x00000002
+#define AR2315_LB_INT_TX_ERR 0x00000004
+#define AR2315_LB_INT_TX_EOF 0x00000008
+#define AR2315_LB_INT_RX_DESC 0x00000010
+#define AR2315_LB_INT_RX_OK 0x00000020
+#define AR2315_LB_INT_RX_ERR 0x00000040
+#define AR2315_LB_INT_RX_EOF 0x00000080
+#define AR2315_LB_INT_TX_TRUNC 0x00000100
+#define AR2315_LB_INT_TX_STARVE 0x00000200
+#define AR2315_LB_INT_LB_TIMEOUT 0x00000400
+#define AR2315_LB_INT_LB_ERR 0x00000800
+#define AR2315_LB_INT_MBOX_WR 0x00001000
+#define AR2315_LB_INT_MBOX_RD 0x00002000
+
+/* Bit definitions for INT MASK are the same as INT_STATUS */
+#define AR2315_LB_INT_MASK 0x0504
+
+#define AR2315_LB_INT_EN 0x0508
+#define AR2315_LB_MBOX 0x0600
+
+#endif /* __ASM_MACH_ATH25_AR2315_REGS_H */
diff --git a/arch/mips/ath25/ar5312.c b/arch/mips/ath25/ar5312.c
new file mode 100644
index 000000000..acd55a9cf
--- /dev/null
+++ b/arch/mips/ath25/ar5312.c
@@ -0,0 +1,393 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2012 Alexandros C. Couloumbis <alex@ozo.com>
+ */
+
+/*
+ * Platform devices for Atheros AR5312 SoCs
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/irqdomain.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/physmap.h>
+#include <linux/reboot.h>
+#include <asm/bootinfo.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+
+#include <ath25_platform.h>
+
+#include "devices.h"
+#include "ar5312.h"
+#include "ar5312_regs.h"
+
+static void __iomem *ar5312_rst_base;
+static struct irq_domain *ar5312_misc_irq_domain;
+
+static inline u32 ar5312_rst_reg_read(u32 reg)
+{
+ return __raw_readl(ar5312_rst_base + reg);
+}
+
+static inline void ar5312_rst_reg_write(u32 reg, u32 val)
+{
+ __raw_writel(val, ar5312_rst_base + reg);
+}
+
+static inline void ar5312_rst_reg_mask(u32 reg, u32 mask, u32 val)
+{
+ u32 ret = ar5312_rst_reg_read(reg);
+
+ ret &= ~mask;
+ ret |= val;
+ ar5312_rst_reg_write(reg, ret);
+}
+
+static irqreturn_t ar5312_ahb_err_handler(int cpl, void *dev_id)
+{
+ u32 proc1 = ar5312_rst_reg_read(AR5312_PROC1);
+ u32 proc_addr = ar5312_rst_reg_read(AR5312_PROCADDR); /* clears error */
+ u32 dma1 = ar5312_rst_reg_read(AR5312_DMA1);
+ u32 dma_addr = ar5312_rst_reg_read(AR5312_DMAADDR); /* clears error */
+
+ pr_emerg("AHB interrupt: PROCADDR=0x%8.8x PROC1=0x%8.8x DMAADDR=0x%8.8x DMA1=0x%8.8x\n",
+ proc_addr, proc1, dma_addr, dma1);
+
+ machine_restart("AHB error"); /* Catastrophic failure */
+ return IRQ_HANDLED;
+}
+
+static struct irqaction ar5312_ahb_err_interrupt = {
+ .handler = ar5312_ahb_err_handler,
+ .name = "ar5312-ahb-error",
+};
+
+static void ar5312_misc_irq_handler(struct irq_desc *desc)
+{
+ u32 pending = ar5312_rst_reg_read(AR5312_ISR) &
+ ar5312_rst_reg_read(AR5312_IMR);
+ unsigned nr, misc_irq = 0;
+
+ if (pending) {
+ struct irq_domain *domain = irq_desc_get_handler_data(desc);
+
+ nr = __ffs(pending);
+ misc_irq = irq_find_mapping(domain, nr);
+ }
+
+ if (misc_irq) {
+ generic_handle_irq(misc_irq);
+ if (nr == AR5312_MISC_IRQ_TIMER)
+ ar5312_rst_reg_read(AR5312_TIMER);
+ } else {
+ spurious_interrupt();
+ }
+}
+
+/* Enable the specified AR5312_MISC_IRQ interrupt */
+static void ar5312_misc_irq_unmask(struct irq_data *d)
+{
+ ar5312_rst_reg_mask(AR5312_IMR, 0, BIT(d->hwirq));
+}
+
+/* Disable the specified AR5312_MISC_IRQ interrupt */
+static void ar5312_misc_irq_mask(struct irq_data *d)
+{
+ ar5312_rst_reg_mask(AR5312_IMR, BIT(d->hwirq), 0);
+ ar5312_rst_reg_read(AR5312_IMR); /* flush write buffer */
+}
+
+static struct irq_chip ar5312_misc_irq_chip = {
+ .name = "ar5312-misc",
+ .irq_unmask = ar5312_misc_irq_unmask,
+ .irq_mask = ar5312_misc_irq_mask,
+};
+
+static int ar5312_misc_irq_map(struct irq_domain *d, unsigned irq,
+ irq_hw_number_t hw)
+{
+ irq_set_chip_and_handler(irq, &ar5312_misc_irq_chip, handle_level_irq);
+ return 0;
+}
+
+static struct irq_domain_ops ar5312_misc_irq_domain_ops = {
+ .map = ar5312_misc_irq_map,
+};
+
+static void ar5312_irq_dispatch(void)
+{
+ u32 pending = read_c0_status() & read_c0_cause();
+
+ if (pending & CAUSEF_IP2)
+ do_IRQ(AR5312_IRQ_WLAN0);
+ else if (pending & CAUSEF_IP5)
+ do_IRQ(AR5312_IRQ_WLAN1);
+ else if (pending & CAUSEF_IP6)
+ do_IRQ(AR5312_IRQ_MISC);
+ else if (pending & CAUSEF_IP7)
+ do_IRQ(ATH25_IRQ_CPU_CLOCK);
+ else
+ spurious_interrupt();
+}
+
+void __init ar5312_arch_init_irq(void)
+{
+ struct irq_domain *domain;
+ unsigned irq;
+
+ ath25_irq_dispatch = ar5312_irq_dispatch;
+
+ domain = irq_domain_add_linear(NULL, AR5312_MISC_IRQ_COUNT,
+ &ar5312_misc_irq_domain_ops, NULL);
+ if (!domain)
+ panic("Failed to add IRQ domain");
+
+ irq = irq_create_mapping(domain, AR5312_MISC_IRQ_AHB_PROC);
+ setup_irq(irq, &ar5312_ahb_err_interrupt);
+
+ irq_set_chained_handler_and_data(AR5312_IRQ_MISC,
+ ar5312_misc_irq_handler, domain);
+
+ ar5312_misc_irq_domain = domain;
+}
+
+static struct physmap_flash_data ar5312_flash_data = {
+ .width = 2,
+};
+
+static struct resource ar5312_flash_resource = {
+ .start = AR5312_FLASH_BASE,
+ .end = AR5312_FLASH_BASE + AR5312_FLASH_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device ar5312_physmap_flash = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev.platform_data = &ar5312_flash_data,
+ .resource = &ar5312_flash_resource,
+ .num_resources = 1,
+};
+
+static void __init ar5312_flash_init(void)
+{
+ void __iomem *flashctl_base;
+ u32 ctl;
+
+ flashctl_base = ioremap_nocache(AR5312_FLASHCTL_BASE,
+ AR5312_FLASHCTL_SIZE);
+
+ ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL0);
+ ctl &= AR5312_FLASHCTL_MW;
+
+ /* fixup flash width */
+ switch (ctl) {
+ case AR5312_FLASHCTL_MW16:
+ ar5312_flash_data.width = 2;
+ break;
+ case AR5312_FLASHCTL_MW8:
+ default:
+ ar5312_flash_data.width = 1;
+ break;
+ }
+
+ /*
+ * Configure flash bank 0.
+ * Assume 8M window size. Flash will be aliased if it's smaller
+ */
+ ctl |= AR5312_FLASHCTL_E | AR5312_FLASHCTL_AC_8M | AR5312_FLASHCTL_RBLE;
+ ctl |= 0x01 << AR5312_FLASHCTL_IDCY_S;
+ ctl |= 0x07 << AR5312_FLASHCTL_WST1_S;
+ ctl |= 0x07 << AR5312_FLASHCTL_WST2_S;
+ __raw_writel(ctl, flashctl_base + AR5312_FLASHCTL0);
+
+ /* Disable other flash banks */
+ ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL1);
+ ctl &= ~(AR5312_FLASHCTL_E | AR5312_FLASHCTL_AC);
+ __raw_writel(ctl, flashctl_base + AR5312_FLASHCTL1);
+ ctl = __raw_readl(flashctl_base + AR5312_FLASHCTL2);
+ ctl &= ~(AR5312_FLASHCTL_E | AR5312_FLASHCTL_AC);
+ __raw_writel(ctl, flashctl_base + AR5312_FLASHCTL2);
+
+ iounmap(flashctl_base);
+}
+
+void __init ar5312_init_devices(void)
+{
+ struct ath25_boarddata *config;
+
+ ar5312_flash_init();
+
+ /* Locate board/radio config data */
+ ath25_find_config(AR5312_FLASH_BASE, AR5312_FLASH_SIZE);
+ config = ath25_board.config;
+
+ /* AR2313 has CPU minor rev. 10 */
+ if ((current_cpu_data.processor_id & 0xff) == 0x0a)
+ ath25_soc = ATH25_SOC_AR2313;
+
+ /* AR2312 shares the same Silicon ID as AR5312 */
+ else if (config->flags & BD_ISCASPER)
+ ath25_soc = ATH25_SOC_AR2312;
+
+ /* Everything else is probably AR5312 or compatible */
+ else
+ ath25_soc = ATH25_SOC_AR5312;
+
+ platform_device_register(&ar5312_physmap_flash);
+
+ switch (ath25_soc) {
+ case ATH25_SOC_AR5312:
+ if (!ath25_board.radio)
+ return;
+
+ if (!(config->flags & BD_WLAN0))
+ break;
+
+ ath25_add_wmac(0, AR5312_WLAN0_BASE, AR5312_IRQ_WLAN0);
+ break;
+ case ATH25_SOC_AR2312:
+ case ATH25_SOC_AR2313:
+ if (!ath25_board.radio)
+ return;
+ break;
+ default:
+ break;
+ }
+
+ if (config->flags & BD_WLAN1)
+ ath25_add_wmac(1, AR5312_WLAN1_BASE, AR5312_IRQ_WLAN1);
+}
+
+static void ar5312_restart(char *command)
+{
+ /* reset the system */
+ local_irq_disable();
+ while (1)
+ ar5312_rst_reg_write(AR5312_RESET, AR5312_RESET_SYSTEM);
+}
+
+/*
+ * This table is indexed by bits 5..4 of the CLOCKCTL1 register
+ * to determine the predevisor value.
+ */
+static unsigned clockctl1_predivide_table[4] __initdata = { 1, 2, 4, 5 };
+
+static unsigned __init ar5312_cpu_frequency(void)
+{
+ u32 scratch, devid, clock_ctl1;
+ u32 predivide_mask, multiplier_mask, doubler_mask;
+ unsigned predivide_shift, multiplier_shift;
+ unsigned predivide_select, predivisor, multiplier;
+
+ /* Trust the bootrom's idea of cpu frequency. */
+ scratch = ar5312_rst_reg_read(AR5312_SCRATCH);
+ if (scratch)
+ return scratch;
+
+ devid = ar5312_rst_reg_read(AR5312_REV);
+ devid = (devid & AR5312_REV_MAJ) >> AR5312_REV_MAJ_S;
+ if (devid == AR5312_REV_MAJ_AR2313) {
+ predivide_mask = AR2313_CLOCKCTL1_PREDIVIDE_MASK;
+ predivide_shift = AR2313_CLOCKCTL1_PREDIVIDE_SHIFT;
+ multiplier_mask = AR2313_CLOCKCTL1_MULTIPLIER_MASK;
+ multiplier_shift = AR2313_CLOCKCTL1_MULTIPLIER_SHIFT;
+ doubler_mask = AR2313_CLOCKCTL1_DOUBLER_MASK;
+ } else { /* AR5312 and AR2312 */
+ predivide_mask = AR5312_CLOCKCTL1_PREDIVIDE_MASK;
+ predivide_shift = AR5312_CLOCKCTL1_PREDIVIDE_SHIFT;
+ multiplier_mask = AR5312_CLOCKCTL1_MULTIPLIER_MASK;
+ multiplier_shift = AR5312_CLOCKCTL1_MULTIPLIER_SHIFT;
+ doubler_mask = AR5312_CLOCKCTL1_DOUBLER_MASK;
+ }
+
+ /*
+ * Clocking is derived from a fixed 40MHz input clock.
+ *
+ * cpu_freq = input_clock * MULT (where MULT is PLL multiplier)
+ * sys_freq = cpu_freq / 4 (used for APB clock, serial,
+ * flash, Timer, Watchdog Timer)
+ *
+ * cnt_freq = cpu_freq / 2 (use for CPU count/compare)
+ *
+ * So, for example, with a PLL multiplier of 5, we have
+ *
+ * cpu_freq = 200MHz
+ * sys_freq = 50MHz
+ * cnt_freq = 100MHz
+ *
+ * We compute the CPU frequency, based on PLL settings.
+ */
+
+ clock_ctl1 = ar5312_rst_reg_read(AR5312_CLOCKCTL1);
+ predivide_select = (clock_ctl1 & predivide_mask) >> predivide_shift;
+ predivisor = clockctl1_predivide_table[predivide_select];
+ multiplier = (clock_ctl1 & multiplier_mask) >> multiplier_shift;
+
+ if (clock_ctl1 & doubler_mask)
+ multiplier <<= 1;
+
+ return (40000000 / predivisor) * multiplier;
+}
+
+static inline unsigned ar5312_sys_frequency(void)
+{
+ return ar5312_cpu_frequency() / 4;
+}
+
+void __init ar5312_plat_time_init(void)
+{
+ mips_hpt_frequency = ar5312_cpu_frequency() / 2;
+}
+
+void __init ar5312_plat_mem_setup(void)
+{
+ void __iomem *sdram_base;
+ u32 memsize, memcfg, bank0_ac, bank1_ac;
+ u32 devid;
+
+ /* Detect memory size */
+ sdram_base = ioremap_nocache(AR5312_SDRAMCTL_BASE,
+ AR5312_SDRAMCTL_SIZE);
+ memcfg = __raw_readl(sdram_base + AR5312_MEM_CFG1);
+ bank0_ac = ATH25_REG_MS(memcfg, AR5312_MEM_CFG1_AC0);
+ bank1_ac = ATH25_REG_MS(memcfg, AR5312_MEM_CFG1_AC1);
+ memsize = (bank0_ac ? (1 << (bank0_ac + 1)) : 0) +
+ (bank1_ac ? (1 << (bank1_ac + 1)) : 0);
+ memsize <<= 20;
+ add_memory_region(0, memsize, BOOT_MEM_RAM);
+ iounmap(sdram_base);
+
+ ar5312_rst_base = ioremap_nocache(AR5312_RST_BASE, AR5312_RST_SIZE);
+
+ devid = ar5312_rst_reg_read(AR5312_REV);
+ devid >>= AR5312_REV_WMAC_MIN_S;
+ devid &= AR5312_REV_CHIP;
+ ath25_board.devid = (u16)devid;
+
+ /* Clear any lingering AHB errors */
+ ar5312_rst_reg_read(AR5312_PROCADDR);
+ ar5312_rst_reg_read(AR5312_DMAADDR);
+ ar5312_rst_reg_write(AR5312_WDT_CTRL, AR5312_WDT_CTRL_IGNORE);
+
+ _machine_restart = ar5312_restart;
+}
+
+void __init ar5312_arch_init(void)
+{
+ unsigned irq = irq_create_mapping(ar5312_misc_irq_domain,
+ AR5312_MISC_IRQ_UART0);
+
+ ath25_serial_setup(AR5312_UART0_BASE, irq, ar5312_sys_frequency());
+}
diff --git a/arch/mips/ath25/ar5312.h b/arch/mips/ath25/ar5312.h
new file mode 100644
index 000000000..67518a59a
--- /dev/null
+++ b/arch/mips/ath25/ar5312.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __AR5312_H
+#define __AR5312_H
+
+#ifdef CONFIG_SOC_AR5312
+
+void ar5312_arch_init_irq(void);
+void ar5312_init_devices(void);
+void ar5312_plat_time_init(void);
+void ar5312_plat_mem_setup(void);
+void ar5312_arch_init(void);
+
+#else
+
+static inline void ar5312_arch_init_irq(void) {}
+static inline void ar5312_init_devices(void) {}
+static inline void ar5312_plat_time_init(void) {}
+static inline void ar5312_plat_mem_setup(void) {}
+static inline void ar5312_arch_init(void) {}
+
+#endif
+
+#endif /* __AR5312_H */
diff --git a/arch/mips/ath25/ar5312_regs.h b/arch/mips/ath25/ar5312_regs.h
new file mode 100644
index 000000000..4b947f967
--- /dev/null
+++ b/arch/mips/ath25/ar5312_regs.h
@@ -0,0 +1,224 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#ifndef __ASM_MACH_ATH25_AR5312_REGS_H
+#define __ASM_MACH_ATH25_AR5312_REGS_H
+
+/*
+ * IRQs
+ */
+#define AR5312_IRQ_WLAN0 (MIPS_CPU_IRQ_BASE + 2) /* C0_CAUSE: 0x0400 */
+#define AR5312_IRQ_ENET0 (MIPS_CPU_IRQ_BASE + 3) /* C0_CAUSE: 0x0800 */
+#define AR5312_IRQ_ENET1 (MIPS_CPU_IRQ_BASE + 4) /* C0_CAUSE: 0x1000 */
+#define AR5312_IRQ_WLAN1 (MIPS_CPU_IRQ_BASE + 5) /* C0_CAUSE: 0x2000 */
+#define AR5312_IRQ_MISC (MIPS_CPU_IRQ_BASE + 6) /* C0_CAUSE: 0x4000 */
+
+/*
+ * Miscellaneous interrupts, which share IP6.
+ */
+#define AR5312_MISC_IRQ_TIMER 0
+#define AR5312_MISC_IRQ_AHB_PROC 1
+#define AR5312_MISC_IRQ_AHB_DMA 2
+#define AR5312_MISC_IRQ_GPIO 3
+#define AR5312_MISC_IRQ_UART0 4
+#define AR5312_MISC_IRQ_UART0_DMA 5
+#define AR5312_MISC_IRQ_WATCHDOG 6
+#define AR5312_MISC_IRQ_LOCAL 7
+#define AR5312_MISC_IRQ_SPI 8
+#define AR5312_MISC_IRQ_COUNT 9
+
+/*
+ * Address Map
+ *
+ * The AR5312 supports 2 enet MACS, even though many reference boards only
+ * actually use 1 of them (i.e. Only MAC 0 is actually connected to an enet
+ * PHY or PHY switch. The AR2312 supports 1 enet MAC.
+ */
+#define AR5312_WLAN0_BASE 0x18000000
+#define AR5312_ENET0_BASE 0x18100000
+#define AR5312_ENET1_BASE 0x18200000
+#define AR5312_SDRAMCTL_BASE 0x18300000
+#define AR5312_SDRAMCTL_SIZE 0x00000010
+#define AR5312_FLASHCTL_BASE 0x18400000
+#define AR5312_FLASHCTL_SIZE 0x00000010
+#define AR5312_WLAN1_BASE 0x18500000
+#define AR5312_UART0_BASE 0x1c000000 /* UART MMR */
+#define AR5312_GPIO_BASE 0x1c002000
+#define AR5312_GPIO_SIZE 0x00000010
+#define AR5312_RST_BASE 0x1c003000
+#define AR5312_RST_SIZE 0x00000100
+#define AR5312_FLASH_BASE 0x1e000000
+#define AR5312_FLASH_SIZE 0x00800000
+
+/*
+ * Need these defines to determine true number of ethernet MACs
+ */
+#define AR5312_AR5312_REV2 0x0052 /* AR5312 WMAC (AP31) */
+#define AR5312_AR5312_REV7 0x0057 /* AR5312 WMAC (AP30-040) */
+#define AR5312_AR2313_REV8 0x0058 /* AR2313 WMAC (AP43-030) */
+
+/* Reset/Timer Block Address Map */
+#define AR5312_TIMER 0x0000 /* countdown timer */
+#define AR5312_RELOAD 0x0004 /* timer reload value */
+#define AR5312_WDT_CTRL 0x0008 /* watchdog cntrl */
+#define AR5312_WDT_TIMER 0x000c /* watchdog timer */
+#define AR5312_ISR 0x0010 /* Intr Status Reg */
+#define AR5312_IMR 0x0014 /* Intr Mask Reg */
+#define AR5312_RESET 0x0020
+#define AR5312_CLOCKCTL1 0x0064
+#define AR5312_SCRATCH 0x006c
+#define AR5312_PROCADDR 0x0070
+#define AR5312_PROC1 0x0074
+#define AR5312_DMAADDR 0x0078
+#define AR5312_DMA1 0x007c
+#define AR5312_ENABLE 0x0080 /* interface enb */
+#define AR5312_REV 0x0090 /* revision */
+
+/* AR5312_WDT_CTRL register bit field definitions */
+#define AR5312_WDT_CTRL_IGNORE 0x00000000 /* ignore expiration */
+#define AR5312_WDT_CTRL_NMI 0x00000001
+#define AR5312_WDT_CTRL_RESET 0x00000002
+
+/* AR5312_ISR register bit field definitions */
+#define AR5312_ISR_TIMER 0x00000001
+#define AR5312_ISR_AHBPROC 0x00000002
+#define AR5312_ISR_AHBDMA 0x00000004
+#define AR5312_ISR_GPIO 0x00000008
+#define AR5312_ISR_UART0 0x00000010
+#define AR5312_ISR_UART0DMA 0x00000020
+#define AR5312_ISR_WD 0x00000040
+#define AR5312_ISR_LOCAL 0x00000080
+
+/* AR5312_RESET register bit field definitions */
+#define AR5312_RESET_SYSTEM 0x00000001 /* cold reset full system */
+#define AR5312_RESET_PROC 0x00000002 /* cold reset MIPS core */
+#define AR5312_RESET_WLAN0 0x00000004 /* cold reset WLAN MAC/BB */
+#define AR5312_RESET_EPHY0 0x00000008 /* cold reset ENET0 phy */
+#define AR5312_RESET_EPHY1 0x00000010 /* cold reset ENET1 phy */
+#define AR5312_RESET_ENET0 0x00000020 /* cold reset ENET0 MAC */
+#define AR5312_RESET_ENET1 0x00000040 /* cold reset ENET1 MAC */
+#define AR5312_RESET_UART0 0x00000100 /* cold reset UART0 */
+#define AR5312_RESET_WLAN1 0x00000200 /* cold reset WLAN MAC/BB */
+#define AR5312_RESET_APB 0x00000400 /* cold reset APB ar5312 */
+#define AR5312_RESET_WARM_PROC 0x00001000 /* warm reset MIPS core */
+#define AR5312_RESET_WARM_WLAN0_MAC 0x00002000 /* warm reset WLAN0 MAC */
+#define AR5312_RESET_WARM_WLAN0_BB 0x00004000 /* warm reset WLAN0 BB */
+#define AR5312_RESET_NMI 0x00010000 /* send an NMI to the CPU */
+#define AR5312_RESET_WARM_WLAN1_MAC 0x00020000 /* warm reset WLAN1 MAC */
+#define AR5312_RESET_WARM_WLAN1_BB 0x00040000 /* warm reset WLAN1 BB */
+#define AR5312_RESET_LOCAL_BUS 0x00080000 /* reset local bus */
+#define AR5312_RESET_WDOG 0x00100000 /* last reset was a wdt */
+
+#define AR5312_RESET_WMAC0_BITS (AR5312_RESET_WLAN0 |\
+ AR5312_RESET_WARM_WLAN0_MAC |\
+ AR5312_RESET_WARM_WLAN0_BB)
+
+#define AR5312_RESET_WMAC1_BITS (AR5312_RESET_WLAN1 |\
+ AR5312_RESET_WARM_WLAN1_MAC |\
+ AR5312_RESET_WARM_WLAN1_BB)
+
+/* AR5312_CLOCKCTL1 register bit field definitions */
+#define AR5312_CLOCKCTL1_PREDIVIDE_MASK 0x00000030
+#define AR5312_CLOCKCTL1_PREDIVIDE_SHIFT 4
+#define AR5312_CLOCKCTL1_MULTIPLIER_MASK 0x00001f00
+#define AR5312_CLOCKCTL1_MULTIPLIER_SHIFT 8
+#define AR5312_CLOCKCTL1_DOUBLER_MASK 0x00010000
+
+/* Valid for AR5312 and AR2312 */
+#define AR5312_CLOCKCTL1_PREDIVIDE_MASK 0x00000030
+#define AR5312_CLOCKCTL1_PREDIVIDE_SHIFT 4
+#define AR5312_CLOCKCTL1_MULTIPLIER_MASK 0x00001f00
+#define AR5312_CLOCKCTL1_MULTIPLIER_SHIFT 8
+#define AR5312_CLOCKCTL1_DOUBLER_MASK 0x00010000
+
+/* Valid for AR2313 */
+#define AR2313_CLOCKCTL1_PREDIVIDE_MASK 0x00003000
+#define AR2313_CLOCKCTL1_PREDIVIDE_SHIFT 12
+#define AR2313_CLOCKCTL1_MULTIPLIER_MASK 0x001f0000
+#define AR2313_CLOCKCTL1_MULTIPLIER_SHIFT 16
+#define AR2313_CLOCKCTL1_DOUBLER_MASK 0x00000000
+
+/* AR5312_ENABLE register bit field definitions */
+#define AR5312_ENABLE_WLAN0 0x00000001
+#define AR5312_ENABLE_ENET0 0x00000002
+#define AR5312_ENABLE_ENET1 0x00000004
+#define AR5312_ENABLE_UART_AND_WLAN1_PIO 0x00000008/* UART & WLAN1 PIO */
+#define AR5312_ENABLE_WLAN1_DMA 0x00000010/* WLAN1 DMAs */
+#define AR5312_ENABLE_WLAN1 (AR5312_ENABLE_UART_AND_WLAN1_PIO |\
+ AR5312_ENABLE_WLAN1_DMA)
+
+/* AR5312_REV register bit field definitions */
+#define AR5312_REV_WMAC_MAJ 0x0000f000
+#define AR5312_REV_WMAC_MAJ_S 12
+#define AR5312_REV_WMAC_MIN 0x00000f00
+#define AR5312_REV_WMAC_MIN_S 8
+#define AR5312_REV_MAJ 0x000000f0
+#define AR5312_REV_MAJ_S 4
+#define AR5312_REV_MIN 0x0000000f
+#define AR5312_REV_MIN_S 0
+#define AR5312_REV_CHIP (AR5312_REV_MAJ|AR5312_REV_MIN)
+
+/* Major revision numbers, bits 7..4 of Revision ID register */
+#define AR5312_REV_MAJ_AR5312 0x4
+#define AR5312_REV_MAJ_AR2313 0x5
+
+/* Minor revision numbers, bits 3..0 of Revision ID register */
+#define AR5312_REV_MIN_DUAL 0x0 /* Dual WLAN version */
+#define AR5312_REV_MIN_SINGLE 0x1 /* Single WLAN version */
+
+/*
+ * ARM Flash Controller -- 3 flash banks with either x8 or x16 devices
+ */
+#define AR5312_FLASHCTL0 0x0000
+#define AR5312_FLASHCTL1 0x0004
+#define AR5312_FLASHCTL2 0x0008
+
+/* AR5312_FLASHCTL register bit field definitions */
+#define AR5312_FLASHCTL_IDCY 0x0000000f /* Idle cycle turnaround time */
+#define AR5312_FLASHCTL_IDCY_S 0
+#define AR5312_FLASHCTL_WST1 0x000003e0 /* Wait state 1 */
+#define AR5312_FLASHCTL_WST1_S 5
+#define AR5312_FLASHCTL_RBLE 0x00000400 /* Read byte lane enable */
+#define AR5312_FLASHCTL_WST2 0x0000f800 /* Wait state 2 */
+#define AR5312_FLASHCTL_WST2_S 11
+#define AR5312_FLASHCTL_AC 0x00070000 /* Flash addr check (added) */
+#define AR5312_FLASHCTL_AC_S 16
+#define AR5312_FLASHCTL_AC_128K 0x00000000
+#define AR5312_FLASHCTL_AC_256K 0x00010000
+#define AR5312_FLASHCTL_AC_512K 0x00020000
+#define AR5312_FLASHCTL_AC_1M 0x00030000
+#define AR5312_FLASHCTL_AC_2M 0x00040000
+#define AR5312_FLASHCTL_AC_4M 0x00050000
+#define AR5312_FLASHCTL_AC_8M 0x00060000
+#define AR5312_FLASHCTL_AC_RES 0x00070000 /* 16MB is not supported */
+#define AR5312_FLASHCTL_E 0x00080000 /* Flash bank enable (added) */
+#define AR5312_FLASHCTL_BUSERR 0x01000000 /* Bus transfer error flag */
+#define AR5312_FLASHCTL_WPERR 0x02000000 /* Write protect error flag */
+#define AR5312_FLASHCTL_WP 0x04000000 /* Write protect */
+#define AR5312_FLASHCTL_BM 0x08000000 /* Burst mode */
+#define AR5312_FLASHCTL_MW 0x30000000 /* Mem width */
+#define AR5312_FLASHCTL_MW8 0x00000000 /* Mem width x8 */
+#define AR5312_FLASHCTL_MW16 0x10000000 /* Mem width x16 */
+#define AR5312_FLASHCTL_MW32 0x20000000 /* Mem width x32 (not supp) */
+#define AR5312_FLASHCTL_ATNR 0x00000000 /* Access == no retry */
+#define AR5312_FLASHCTL_ATR 0x80000000 /* Access == retry every */
+#define AR5312_FLASHCTL_ATR4 0xc0000000 /* Access == retry every 4 */
+
+/*
+ * ARM SDRAM Controller -- just enough to determine memory size
+ */
+#define AR5312_MEM_CFG1 0x0004
+
+#define AR5312_MEM_CFG1_AC0_M 0x00000700 /* bank 0: SDRAM addr check */
+#define AR5312_MEM_CFG1_AC0_S 8
+#define AR5312_MEM_CFG1_AC1_M 0x00007000 /* bank 1: SDRAM addr check */
+#define AR5312_MEM_CFG1_AC1_S 12
+
+#endif /* __ASM_MACH_ATH25_AR5312_REGS_H */
diff --git a/arch/mips/ath25/board.c b/arch/mips/ath25/board.c
new file mode 100644
index 000000000..989e71015
--- /dev/null
+++ b/arch/mips/ath25/board.c
@@ -0,0 +1,236 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <asm/irq_cpu.h>
+#include <asm/reboot.h>
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+
+#include <ath25_platform.h>
+#include "devices.h"
+#include "ar5312.h"
+#include "ar2315.h"
+
+void (*ath25_irq_dispatch)(void);
+
+static inline bool check_radio_magic(const void __iomem *addr)
+{
+ addr += 0x7a; /* offset for flash magic */
+ return (__raw_readb(addr) == 0x5a) && (__raw_readb(addr + 1) == 0xa5);
+}
+
+static inline bool check_notempty(const void __iomem *addr)
+{
+ return __raw_readl(addr) != 0xffffffff;
+}
+
+static inline bool check_board_data(const void __iomem *addr, bool broken)
+{
+ /* config magic found */
+ if (__raw_readl(addr) == ATH25_BD_MAGIC)
+ return true;
+
+ if (!broken)
+ return false;
+
+ /* broken board data detected, use radio data to find the
+ * offset, user will fix this */
+
+ if (check_radio_magic(addr + 0x1000))
+ return true;
+ if (check_radio_magic(addr + 0xf8))
+ return true;
+
+ return false;
+}
+
+static const void __iomem * __init find_board_config(const void __iomem *limit,
+ const bool broken)
+{
+ const void __iomem *addr;
+ const void __iomem *begin = limit - 0x1000;
+ const void __iomem *end = limit - 0x30000;
+
+ for (addr = begin; addr >= end; addr -= 0x1000)
+ if (check_board_data(addr, broken))
+ return addr;
+
+ return NULL;
+}
+
+static const void __iomem * __init find_radio_config(const void __iomem *limit,
+ const void __iomem *bcfg)
+{
+ const void __iomem *rcfg, *begin, *end;
+
+ /*
+ * Now find the start of Radio Configuration data, using heuristics:
+ * Search forward from Board Configuration data by 0x1000 bytes
+ * at a time until we find non-0xffffffff.
+ */
+ begin = bcfg + 0x1000;
+ end = limit;
+ for (rcfg = begin; rcfg < end; rcfg += 0x1000)
+ if (check_notempty(rcfg) && check_radio_magic(rcfg))
+ return rcfg;
+
+ /* AR2316 relocates radio config to new location */
+ begin = bcfg + 0xf8;
+ end = limit - 0x1000 + 0xf8;
+ for (rcfg = begin; rcfg < end; rcfg += 0x1000)
+ if (check_notempty(rcfg) && check_radio_magic(rcfg))
+ return rcfg;
+
+ return NULL;
+}
+
+/*
+ * NB: Search region size could be larger than the actual flash size,
+ * but this shouldn't be a problem here, because the flash
+ * will simply be mapped multiple times.
+ */
+int __init ath25_find_config(phys_addr_t base, unsigned long size)
+{
+ const void __iomem *flash_base, *flash_limit;
+ struct ath25_boarddata *config;
+ unsigned int rcfg_size;
+ int broken_boarddata = 0;
+ const void __iomem *bcfg, *rcfg;
+ u8 *board_data;
+ u8 *radio_data;
+ u8 *mac_addr;
+ u32 offset;
+
+ flash_base = ioremap_nocache(base, size);
+ flash_limit = flash_base + size;
+
+ ath25_board.config = NULL;
+ ath25_board.radio = NULL;
+
+ /* Copy the board and radio data to RAM, because accessing the mapped
+ * memory of the flash directly after booting is not safe */
+
+ /* Try to find valid board and radio data */
+ bcfg = find_board_config(flash_limit, false);
+
+ /* If that fails, try to at least find valid radio data */
+ if (!bcfg) {
+ bcfg = find_board_config(flash_limit, true);
+ broken_boarddata = 1;
+ }
+
+ if (!bcfg) {
+ pr_warn("WARNING: No board configuration data found!\n");
+ goto error;
+ }
+
+ board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
+ if (!board_data)
+ goto error;
+ ath25_board.config = (struct ath25_boarddata *)board_data;
+ memcpy_fromio(board_data, bcfg, 0x100);
+ if (broken_boarddata) {
+ pr_warn("WARNING: broken board data detected\n");
+ config = ath25_board.config;
+ if (is_zero_ether_addr(config->enet0_mac)) {
+ pr_info("Fixing up empty mac addresses\n");
+ config->reset_config_gpio = 0xffff;
+ config->sys_led_gpio = 0xffff;
+ eth_random_addr(config->wlan0_mac);
+ config->wlan0_mac[0] &= ~0x06;
+ eth_random_addr(config->enet0_mac);
+ eth_random_addr(config->enet1_mac);
+ }
+ }
+
+ /* Radio config starts 0x100 bytes after board config, regardless
+ * of what the physical layout on the flash chip looks like */
+
+ rcfg = find_radio_config(flash_limit, bcfg);
+ if (!rcfg) {
+ pr_warn("WARNING: Could not find Radio Configuration data\n");
+ goto error;
+ }
+
+ radio_data = board_data + 0x100 + ((rcfg - bcfg) & 0xfff);
+ ath25_board.radio = radio_data;
+ offset = radio_data - board_data;
+ pr_info("Radio config found at offset 0x%x (0x%x)\n", rcfg - bcfg,
+ offset);
+ rcfg_size = BOARD_CONFIG_BUFSZ - offset;
+ memcpy_fromio(radio_data, rcfg, rcfg_size);
+
+ mac_addr = &radio_data[0x1d * 2];
+ if (is_broadcast_ether_addr(mac_addr)) {
+ pr_info("Radio MAC is blank; using board-data\n");
+ ether_addr_copy(mac_addr, ath25_board.config->wlan0_mac);
+ }
+
+ iounmap(flash_base);
+
+ return 0;
+
+error:
+ iounmap(flash_base);
+ return -ENODEV;
+}
+
+static void ath25_halt(void)
+{
+ local_irq_disable();
+ unreachable();
+}
+
+void __init plat_mem_setup(void)
+{
+ _machine_halt = ath25_halt;
+ pm_power_off = ath25_halt;
+
+ if (is_ar5312())
+ ar5312_plat_mem_setup();
+ else
+ ar2315_plat_mem_setup();
+
+ /* Disable data watchpoints */
+ write_c0_watchlo0(0);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+ ath25_irq_dispatch();
+}
+
+void __init plat_time_init(void)
+{
+ if (is_ar5312())
+ ar5312_plat_time_init();
+ else
+ ar2315_plat_time_init();
+}
+
+unsigned int get_c0_compare_int(void)
+{
+ return CP0_LEGACY_COMPARE_IRQ;
+}
+
+void __init arch_init_irq(void)
+{
+ clear_c0_status(ST0_IM);
+ mips_cpu_irq_init();
+
+ /* Initialize interrupt controllers */
+ if (is_ar5312())
+ ar5312_arch_init_irq();
+ else
+ ar2315_arch_init_irq();
+}
diff --git a/arch/mips/ath25/devices.c b/arch/mips/ath25/devices.c
new file mode 100644
index 000000000..301a90282
--- /dev/null
+++ b/arch/mips/ath25/devices.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+#include <linux/platform_device.h>
+#include <asm/bootinfo.h>
+
+#include <ath25_platform.h>
+#include "devices.h"
+#include "ar5312.h"
+#include "ar2315.h"
+
+struct ar231x_board_config ath25_board;
+enum ath25_soc_type ath25_soc = ATH25_SOC_UNKNOWN;
+
+static struct resource ath25_wmac0_res[] = {
+ {
+ .name = "wmac0_membase",
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "wmac0_irq",
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct resource ath25_wmac1_res[] = {
+ {
+ .name = "wmac1_membase",
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .name = "wmac1_irq",
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct platform_device ath25_wmac[] = {
+ {
+ .id = 0,
+ .name = "ar231x-wmac",
+ .resource = ath25_wmac0_res,
+ .num_resources = ARRAY_SIZE(ath25_wmac0_res),
+ .dev.platform_data = &ath25_board,
+ },
+ {
+ .id = 1,
+ .name = "ar231x-wmac",
+ .resource = ath25_wmac1_res,
+ .num_resources = ARRAY_SIZE(ath25_wmac1_res),
+ .dev.platform_data = &ath25_board,
+ },
+};
+
+static const char * const soc_type_strings[] = {
+ [ATH25_SOC_AR5312] = "Atheros AR5312",
+ [ATH25_SOC_AR2312] = "Atheros AR2312",
+ [ATH25_SOC_AR2313] = "Atheros AR2313",
+ [ATH25_SOC_AR2315] = "Atheros AR2315",
+ [ATH25_SOC_AR2316] = "Atheros AR2316",
+ [ATH25_SOC_AR2317] = "Atheros AR2317",
+ [ATH25_SOC_AR2318] = "Atheros AR2318",
+ [ATH25_SOC_UNKNOWN] = "Atheros (unknown)",
+};
+
+const char *get_system_type(void)
+{
+ if ((ath25_soc >= ARRAY_SIZE(soc_type_strings)) ||
+ !soc_type_strings[ath25_soc])
+ return soc_type_strings[ATH25_SOC_UNKNOWN];
+ return soc_type_strings[ath25_soc];
+}
+
+void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk)
+{
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+ struct uart_port s;
+
+ memset(&s, 0, sizeof(s));
+
+ s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP;
+ s.iotype = UPIO_MEM32;
+ s.irq = irq;
+ s.regshift = 2;
+ s.mapbase = mapbase;
+ s.uartclk = uartclk;
+
+ early_serial_setup(&s);
+#endif /* CONFIG_SERIAL_8250_CONSOLE */
+}
+
+int __init ath25_add_wmac(int nr, u32 base, int irq)
+{
+ struct resource *res;
+
+ ath25_wmac[nr].dev.platform_data = &ath25_board;
+ res = &ath25_wmac[nr].resource[0];
+ res->start = base;
+ res->end = base + 0x10000 - 1;
+ res++;
+ res->start = irq;
+ res->end = irq;
+ return platform_device_register(&ath25_wmac[nr]);
+}
+
+static int __init ath25_register_devices(void)
+{
+ if (is_ar5312())
+ ar5312_init_devices();
+ else
+ ar2315_init_devices();
+
+ return 0;
+}
+
+device_initcall(ath25_register_devices);
+
+static int __init ath25_arch_init(void)
+{
+ if (is_ar5312())
+ ar5312_arch_init();
+ else
+ ar2315_arch_init();
+
+ return 0;
+}
+
+arch_initcall(ath25_arch_init);
diff --git a/arch/mips/ath25/devices.h b/arch/mips/ath25/devices.h
new file mode 100644
index 000000000..44cf69063
--- /dev/null
+++ b/arch/mips/ath25/devices.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ATH25_DEVICES_H
+#define __ATH25_DEVICES_H
+
+#include <linux/cpu.h>
+
+#define ATH25_REG_MS(_val, _field) (((_val) & _field##_M) >> _field##_S)
+
+#define ATH25_IRQ_CPU_CLOCK (MIPS_CPU_IRQ_BASE + 7) /* C0_CAUSE: 0x8000 */
+
+enum ath25_soc_type {
+ /* handled by ar5312.c */
+ ATH25_SOC_AR2312,
+ ATH25_SOC_AR2313,
+ ATH25_SOC_AR5312,
+
+ /* handled by ar2315.c */
+ ATH25_SOC_AR2315,
+ ATH25_SOC_AR2316,
+ ATH25_SOC_AR2317,
+ ATH25_SOC_AR2318,
+
+ ATH25_SOC_UNKNOWN
+};
+
+extern enum ath25_soc_type ath25_soc;
+extern struct ar231x_board_config ath25_board;
+extern void (*ath25_irq_dispatch)(void);
+
+int ath25_find_config(phys_addr_t offset, unsigned long size);
+void ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk);
+int ath25_add_wmac(int nr, u32 base, int irq);
+
+static inline bool is_ar2315(void)
+{
+ return (current_cpu_data.cputype == CPU_4KEC);
+}
+
+static inline bool is_ar5312(void)
+{
+ return !is_ar2315();
+}
+
+#endif
diff --git a/arch/mips/ath25/early_printk.c b/arch/mips/ath25/early_printk.c
new file mode 100644
index 000000000..d534761e9
--- /dev/null
+++ b/arch/mips/ath25/early_printk.c
@@ -0,0 +1,45 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
+ */
+
+#include <linux/mm.h>
+#include <linux/io.h>
+#include <linux/serial_reg.h>
+#include <asm/setup.h>
+
+#include "devices.h"
+#include "ar2315_regs.h"
+#include "ar5312_regs.h"
+
+static inline void prom_uart_wr(void __iomem *base, unsigned reg,
+ unsigned char ch)
+{
+ __raw_writel(ch, base + 4 * reg);
+}
+
+static inline unsigned char prom_uart_rr(void __iomem *base, unsigned reg)
+{
+ return __raw_readl(base + 4 * reg);
+}
+
+void prom_putchar(char ch)
+{
+ static void __iomem *base;
+
+ if (unlikely(base == NULL)) {
+ if (is_ar2315())
+ base = (void __iomem *)(KSEG1ADDR(AR2315_UART0_BASE));
+ else
+ base = (void __iomem *)(KSEG1ADDR(AR5312_UART0_BASE));
+ }
+
+ while ((prom_uart_rr(base, UART_LSR) & UART_LSR_THRE) == 0)
+ ;
+ prom_uart_wr(base, UART_TX, (unsigned char)ch);
+ while ((prom_uart_rr(base, UART_LSR) & UART_LSR_THRE) == 0)
+ ;
+}
diff --git a/arch/mips/ath25/prom.c b/arch/mips/ath25/prom.c
new file mode 100644
index 000000000..edf82be88
--- /dev/null
+++ b/arch/mips/ath25/prom.c
@@ -0,0 +1,26 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright MontaVista Software Inc
+ * Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ */
+
+/*
+ * Prom setup file for AR5312/AR231x SoCs
+ */
+
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+
+void __init prom_init(void)
+{
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 17:15:00 +0000