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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc/platforms/83xx/mpc834x_sys.c
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Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ppc/platforms/83xx/mpc834x_sys.c')
-rw-r--r--arch/ppc/platforms/83xx/mpc834x_sys.c289
1 files changed, 289 insertions, 0 deletions
diff --git a/arch/ppc/platforms/83xx/mpc834x_sys.c b/arch/ppc/platforms/83xx/mpc834x_sys.c
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index 000000000000..b3b0f51979d2
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+++ b/arch/ppc/platforms/83xx/mpc834x_sys.c
@@ -0,0 +1,289 @@
+/*
+ * arch/ppc/platforms/83xx/mpc834x_sys.c
+ *
+ * MPC834x SYS board specific routines
+ *
+ * Maintainer: Kumar Gala <kumar.gala@freescale.com>
+ *
+ * Copyright 2005 Freescale Semiconductor 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.
+ */
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/serial.h>
+#include <linux/tty.h> /* for linux/serial_core.h */
+#include <linux/serial_core.h>
+#include <linux/initrd.h>
+#include <linux/module.h>
+#include <linux/fsl_devices.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/atomic.h>
+#include <asm/time.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/ipic.h>
+#include <asm/bootinfo.h>
+#include <asm/pci-bridge.h>
+#include <asm/mpc83xx.h>
+#include <asm/irq.h>
+#include <asm/kgdb.h>
+#include <asm/ppc_sys.h>
+#include <mm/mmu_decl.h>
+
+#include <syslib/ppc83xx_setup.h>
+
+#ifndef CONFIG_PCI
+unsigned long isa_io_base = 0;
+unsigned long isa_mem_base = 0;
+#endif
+
+extern unsigned long total_memory; /* in mm/init */
+
+unsigned char __res[sizeof (bd_t)];
+
+#ifdef CONFIG_PCI
+#error "PCI is not supported"
+/* NEED mpc83xx_map_irq & mpc83xx_exclude_device
+ see platforms/85xx/mpc85xx_ads_common.c */
+#endif /* CONFIG_PCI */
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+static void __init
+mpc834x_sys_setup_arch(void)
+{
+ bd_t *binfo = (bd_t *) __res;
+ unsigned int freq;
+ struct gianfar_platform_data *pdata;
+
+ /* get the core frequency */
+ freq = binfo->bi_intfreq;
+
+ /* Set loops_per_jiffy to a half-way reasonable value,
+ for use until calibrate_delay gets called. */
+ loops_per_jiffy = freq / HZ;
+
+#ifdef CONFIG_PCI
+ /* setup PCI host bridges */
+ mpc83xx_sys_setup_hose();
+#endif
+ mpc83xx_early_serial_map();
+
+ /* setup the board related information for the enet controllers */
+ pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC83xx_TSEC1);
+ pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
+ pdata->interruptPHY = MPC83xx_IRQ_EXT1;
+ pdata->phyid = 0;
+ /* fixup phy address */
+ pdata->phy_reg_addr += binfo->bi_immr_base;
+ memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
+
+ pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC83xx_TSEC2);
+ pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
+ pdata->interruptPHY = MPC83xx_IRQ_EXT2;
+ pdata->phyid = 1;
+ /* fixup phy address */
+ pdata->phy_reg_addr += binfo->bi_immr_base;
+ memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
+
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (initrd_start)
+ ROOT_DEV = Root_RAM0;
+ else
+#endif
+#ifdef CONFIG_ROOT_NFS
+ ROOT_DEV = Root_NFS;
+#else
+ ROOT_DEV = Root_HDA1;
+#endif
+}
+
+static void __init
+mpc834x_sys_map_io(void)
+{
+ /* we steal the lowest ioremap addr for virt space */
+ io_block_mapping(VIRT_IMMRBAR, immrbar, 1024*1024, _PAGE_IO);
+ io_block_mapping(BCSR_VIRT_ADDR, BCSR_PHYS_ADDR, BCSR_SIZE, _PAGE_IO);
+}
+
+int
+mpc834x_sys_show_cpuinfo(struct seq_file *m)
+{
+ uint pvid, svid, phid1;
+ bd_t *binfo = (bd_t *) __res;
+ unsigned int freq;
+
+ /* get the core frequency */
+ freq = binfo->bi_intfreq;
+
+ pvid = mfspr(SPRN_PVR);
+ svid = mfspr(SPRN_SVR);
+
+ seq_printf(m, "Vendor\t\t: Freescale Inc.\n");
+ seq_printf(m, "Machine\t\t: mpc%s sys\n", cur_ppc_sys_spec->ppc_sys_name);
+ seq_printf(m, "core clock\t: %d MHz\n"
+ "bus clock\t: %d MHz\n",
+ (int)(binfo->bi_intfreq / 1000000),
+ (int)(binfo->bi_busfreq / 1000000));
+ seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
+ seq_printf(m, "SVR\t\t: 0x%x\n", svid);
+
+ /* Display cpu Pll setting */
+ phid1 = mfspr(SPRN_HID1);
+ seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
+
+ /* Display the amount of memory */
+ seq_printf(m, "Memory\t\t: %d MB\n", (int)(binfo->bi_memsize / (1024 * 1024)));
+
+ return 0;
+}
+
+
+void __init
+mpc834x_sys_init_IRQ(void)
+{
+ bd_t *binfo = (bd_t *) __res;
+
+ u8 senses[8] = {
+ 0, /* EXT 0 */
+ IRQ_SENSE_LEVEL, /* EXT 1 */
+ IRQ_SENSE_LEVEL, /* EXT 2 */
+ 0, /* EXT 3 */
+ 0, /* EXT 4 */
+ 0, /* EXT 5 */
+ 0, /* EXT 6 */
+ 0, /* EXT 7 */
+ };
+
+ ipic_init(binfo->bi_immr_base + 0x00700, 0, MPC83xx_IPIC_IRQ_OFFSET, senses, 8);
+
+ /* Initialize the default interrupt mapping priorities,
+ * in case the boot rom changed something on us.
+ */
+ ipic_set_default_priority();
+}
+
+static __inline__ void
+mpc834x_sys_set_bat(void)
+{
+ /* we steal the lowest ioremap addr for virt space */
+ mb();
+ mtspr(SPRN_DBAT1U, VIRT_IMMRBAR | 0x1e);
+ mtspr(SPRN_DBAT1L, immrbar | 0x2a);
+ mb();
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7)
+{
+ bd_t *binfo = (bd_t *) __res;
+
+ /* parse_bootinfo must always be called first */
+ parse_bootinfo(find_bootinfo());
+
+ /*
+ * If we were passed in a board information, copy it into the
+ * residual data area.
+ */
+ if (r3) {
+ memcpy((void *) __res, (void *) (r3 + KERNELBASE),
+ sizeof (bd_t));
+ }
+
+#if defined(CONFIG_BLK_DEV_INITRD)
+ /*
+ * If the init RAM disk has been configured in, and there's a valid
+ * starting address for it, set it up.
+ */
+ if (r4) {
+ initrd_start = r4 + KERNELBASE;
+ initrd_end = r5 + KERNELBASE;
+ }
+#endif /* CONFIG_BLK_DEV_INITRD */
+
+ /* Copy the kernel command line arguments to a safe place. */
+ if (r6) {
+ *(char *) (r7 + KERNELBASE) = 0;
+ strcpy(cmd_line, (char *) (r6 + KERNELBASE));
+ }
+
+ immrbar = binfo->bi_immr_base;
+
+ mpc834x_sys_set_bat();
+
+#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
+ {
+ struct uart_port p;
+
+ memset(&p, 0, sizeof (p));
+ p.iotype = SERIAL_IO_MEM;
+ p.membase = (unsigned char __iomem *)(VIRT_IMMRBAR + 0x4500);
+ p.uartclk = binfo->bi_busfreq;
+
+ gen550_init(0, &p);
+
+ memset(&p, 0, sizeof (p));
+ p.iotype = SERIAL_IO_MEM;
+ p.membase = (unsigned char __iomem *)(VIRT_IMMRBAR + 0x4600);
+ p.uartclk = binfo->bi_busfreq;
+
+ gen550_init(1, &p);
+ }
+#endif
+
+ identify_ppc_sys_by_id(mfspr(SPRN_SVR));
+
+ /* setup the PowerPC module struct */
+ ppc_md.setup_arch = mpc834x_sys_setup_arch;
+ ppc_md.show_cpuinfo = mpc834x_sys_show_cpuinfo;
+
+ ppc_md.init_IRQ = mpc834x_sys_init_IRQ;
+ ppc_md.get_irq = ipic_get_irq;
+
+ ppc_md.restart = mpc83xx_restart;
+ ppc_md.power_off = mpc83xx_power_off;
+ ppc_md.halt = mpc83xx_halt;
+
+ ppc_md.find_end_of_memory = mpc83xx_find_end_of_memory;
+ ppc_md.setup_io_mappings = mpc834x_sys_map_io;
+
+ ppc_md.time_init = mpc83xx_time_init;
+ ppc_md.set_rtc_time = NULL;
+ ppc_md.get_rtc_time = NULL;
+ ppc_md.calibrate_decr = mpc83xx_calibrate_decr;
+
+ ppc_md.early_serial_map = mpc83xx_early_serial_map;
+#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
+ ppc_md.progress = gen550_progress;
+#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
+
+ if (ppc_md.progress)
+ ppc_md.progress("mpc834x_sys_init(): exit", 0);
+
+ return;
+}
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