Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 200 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c
new file mode 100644
index 000000000..8cdeca061
--- /dev/null
+++ b/arch/powerpc/platforms/86xx/gef_sbc310.c
@@ -0,0 +1,200 @@
+/*
+ * GE SBC310 board support
+ *
+ * Author: Martyn Welch <martyn.welch@ge.com>
+ *
+ * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * Based on: mpc86xx_hpcn.c (MPC86xx HPCN board specific routines)
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * NEC fixup adapted from arch/mips/pci/fixup-lm2e.c
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/of_platform.h>
+
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/prom.h>
+#include <mm/mmu_decl.h>
+#include <asm/udbg.h>
+
+#include <asm/mpic.h>
+#include <asm/nvram.h>
+
+#include <sysdev/fsl_pci.h>
+#include <sysdev/fsl_soc.h>
+#include <sysdev/ge/ge_pic.h>
+
+#include "mpc86xx.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG (fmt...) do { printk(KERN_ERR "SBC310: " fmt); } while (0)
+#else
+#define DBG (fmt...) do { } while (0)
+#endif
+
+void __iomem *sbc310_regs;
+
+static void __init gef_sbc310_init_irq(void)
+{
+	struct device_node *cascade_node = NULL;
+
+	mpc86xx_init_irq();
+
+	/*
+	 * There is a simple interrupt handler in the main FPGA, this needs
+	 * to be cascaded into the MPIC
+	 */
+	cascade_node = of_find_compatible_node(NULL, NULL, "gef,fpga-pic");
+	if (!cascade_node) {
+		printk(KERN_WARNING "SBC310: No FPGA PIC\n");
+		return;
+	}
+
+	gef_pic_init(cascade_node);
+	of_node_put(cascade_node);
+}
+
+static void __init gef_sbc310_setup_arch(void)
+{
+	struct device_node *regs;
+	printk(KERN_INFO "GE Intelligent Platforms SBC310 6U VPX SBC\n");
+
+#ifdef CONFIG_SMP
+	mpc86xx_smp_init();
+#endif
+
+	fsl_pci_assign_primary();
+
+	/* Remap basic board registers */
+	regs = of_find_compatible_node(NULL, NULL, "gef,fpga-regs");
+	if (regs) {
+		sbc310_regs = of_iomap(regs, 0);
+		if (sbc310_regs == NULL)
+			printk(KERN_WARNING "Unable to map board registers\n");
+		of_node_put(regs);
+	}
+
+#if defined(CONFIG_MMIO_NVRAM)
+	mmio_nvram_init();
+#endif
+}
+
+/* Return the PCB revision */
+static unsigned int gef_sbc310_get_board_id(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return reg & 0xff;
+}
+
+/* Return the PCB revision */
+static unsigned int gef_sbc310_get_pcb_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return (reg >> 8) & 0xff;
+}
+
+/* Return the board (software) revision */
+static unsigned int gef_sbc310_get_board_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return (reg >> 16) & 0xff;
+}
+
+/* Return the FPGA revision */
+static unsigned int gef_sbc310_get_fpga_rev(void)
+{
+	unsigned int reg;
+
+	reg = ioread32(sbc310_regs);
+	return (reg >> 24) & 0xf;
+}
+
+static void gef_sbc310_show_cpuinfo(struct seq_file *m)
+{
+	uint svid = mfspr(SPRN_SVR);
+
+	seq_printf(m, "Vendor\t\t: GE Intelligent Platforms\n");
+
+	seq_printf(m, "Board ID\t: 0x%2.2x\n", gef_sbc310_get_board_id());
+	seq_printf(m, "Revision\t: %u%c\n", gef_sbc310_get_pcb_rev(),
+		('A' + gef_sbc310_get_board_rev() - 1));
+	seq_printf(m, "FPGA Revision\t: %u\n", gef_sbc310_get_fpga_rev());
+
+	seq_printf(m, "SVR\t\t: 0x%x\n", svid);
+
+}
+
+static void gef_sbc310_nec_fixup(struct pci_dev *pdev)
+{
+	unsigned int val;
+
+	/* Do not do the fixup on other platforms! */
+	if (!machine_is(gef_sbc310))
+		return;
+
+	printk(KERN_INFO "Running NEC uPD720101 Fixup\n");
+
+	/* Ensure only ports 1 & 2 are enabled */
+	pci_read_config_dword(pdev, 0xe0, &val);
+	pci_write_config_dword(pdev, 0xe0, (val & ~7) | 0x2);
+
+	/* System clock is 48-MHz Oscillator and EHCI Enabled. */
+	pci_write_config_dword(pdev, 0xe4, 1 << 5);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
+	gef_sbc310_nec_fixup);
+
+/*
+ * Called very early, device-tree isn't unflattened
+ *
+ * This function is called to determine whether the BSP is compatible with the
+ * supplied device-tree, which is assumed to be the correct one for the actual
+ * board. It is expected thati, in the future, a kernel may support multiple
+ * boards.
+ */
+static int __init gef_sbc310_probe(void)
+{
+	if (of_machine_is_compatible("gef,sbc310"))
+		return 1;
+
+	return 0;
+}
+
+machine_arch_initcall(gef_sbc310, mpc86xx_common_publish_devices);
+
+define_machine(gef_sbc310) {
+	.name			= "GE SBC310",
+	.probe			= gef_sbc310_probe,
+	.setup_arch		= gef_sbc310_setup_arch,
+	.init_IRQ		= gef_sbc310_init_irq,
+	.show_cpuinfo		= gef_sbc310_show_cpuinfo,
+	.get_irq		= mpic_get_irq,
+	.time_init		= mpc86xx_time_init,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+#ifdef CONFIG_PCI
+	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
+#endif
+};