/*
- * arch/ppc/syslib/ibm44x_common.c
- *
* PPC44x system library
*
- * Matt Porter <mporter@mvista.com>
- * Copyright 2002-2003 MontaVista Software Inc.
+ * 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, 2004 Zultys Technologies
*
* 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
* option) any later version.
*
*/
-#include <linux/config.h>
+#include <linux/time.h>
#include <linux/types.h>
+#include <linux/serial.h>
+#include <linux/module.h>
+#include <linux/initrd.h>
+
#include <asm/ibm44x.h>
#include <asm/mmu.h>
+#include <asm/machdep.h>
+#include <asm/time.h>
+#include <asm/ppc4xx_pic.h>
+#include <asm/param.h>
+#include <asm/bootinfo.h>
+#include <asm/ppcboot.h>
+
+#include <syslib/gen550.h>
+
+/* Global Variables */
+bd_t __res;
phys_addr_t fixup_bigphys_addr(phys_addr_t addr, phys_addr_t size)
{
* address in the 440's 36-bit address space. Fix
* them up with the appropriate ERPN
*/
- if ((addr >= PPC44x_IO_LO) && (addr < PPC44x_IO_HI))
+ if ((addr >= PPC44x_IO_LO) && (addr <= PPC44x_IO_HI))
page_4gb = PPC44x_IO_PAGE;
- else if ((addr >= PPC44x_PCICFG_LO) && (addr < PPC44x_PCICFG_HI))
+ else if ((addr >= PPC44x_PCI0CFG_LO) && (addr <= PPC44x_PCI0CFG_HI))
+ page_4gb = PPC44x_PCICFG_PAGE;
+#ifdef CONFIG_440SP
+ else if ((addr >= PPC44x_PCI1CFG_LO) && (addr <= PPC44x_PCI1CFG_HI))
page_4gb = PPC44x_PCICFG_PAGE;
- else if ((addr >= PPC44x_PCIMEM_LO) && (addr < PPC44x_PCIMEM_HI))
+ else if ((addr >= PPC44x_PCI2CFG_LO) && (addr <= PPC44x_PCI2CFG_HI))
+ page_4gb = PPC44x_PCICFG_PAGE;
+#endif
+ else if ((addr >= PPC44x_PCIMEM_LO) && (addr <= PPC44x_PCIMEM_HI))
page_4gb = PPC44x_PCIMEM_PAGE;
return (page_4gb | addr);
};
+EXPORT_SYMBOL(fixup_bigphys_addr);
+
+void __init ibm44x_calibrate_decr(unsigned int freq)
+{
+ tb_ticks_per_jiffy = freq / HZ;
+ tb_to_us = mulhwu_scale_factor(freq, 1000000);
+
+ /* Set the time base to zero */
+ mtspr(SPRN_TBWL, 0);
+ mtspr(SPRN_TBWU, 0);
+
+ /* Clear any pending timer interrupts */
+ mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);
+
+ /* Enable decrementer interrupt */
+ mtspr(SPRN_TCR, TCR_DIE);
+}
+
+extern void abort(void);
+
+static void ibm44x_restart(char *cmd)
+{
+ local_irq_disable();
+ abort();
+}
+
+static void ibm44x_power_off(void)
+{
+ local_irq_disable();
+ for(;;);
+}
+
+static void ibm44x_halt(void)
+{
+ local_irq_disable();
+ for(;;);
+}
+
+/*
+ * Read the 44x memory controller to get size of system memory.
+ */
+static unsigned long __init ibm44x_find_end_of_memory(void)
+{
+ u32 i, bank_config;
+ u32 mem_size = 0;
+
+ for (i=0; i<4; i++)
+ {
+ switch (i)
+ {
+ case 0:
+ mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B0CR);
+ break;
+ case 1:
+ mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B1CR);
+ break;
+ case 2:
+ mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B2CR);
+ break;
+ case 3:
+ mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B3CR);
+ break;
+ }
+
+ bank_config = mfdcr(DCRN_SDRAM0_CFGDATA);
+
+ if (!(bank_config & SDRAM_CONFIG_BANK_ENABLE))
+ continue;
+ switch (SDRAM_CONFIG_BANK_SIZE(bank_config))
+ {
+ case SDRAM_CONFIG_SIZE_8M:
+ mem_size += PPC44x_MEM_SIZE_8M;
+ break;
+ case SDRAM_CONFIG_SIZE_16M:
+ mem_size += PPC44x_MEM_SIZE_16M;
+ break;
+ case SDRAM_CONFIG_SIZE_32M:
+ mem_size += PPC44x_MEM_SIZE_32M;
+ break;
+ case SDRAM_CONFIG_SIZE_64M:
+ mem_size += PPC44x_MEM_SIZE_64M;
+ break;
+ case SDRAM_CONFIG_SIZE_128M:
+ mem_size += PPC44x_MEM_SIZE_128M;
+ break;
+ case SDRAM_CONFIG_SIZE_256M:
+ mem_size += PPC44x_MEM_SIZE_256M;
+ break;
+ case SDRAM_CONFIG_SIZE_512M:
+ mem_size += PPC44x_MEM_SIZE_512M;
+ break;
+ }
+ }
+ return mem_size;
+}
+
+void __init ibm44x_platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7)
+{
+ parse_bootinfo(find_bootinfo());
+
+ /*
+ * If we were passed in a board information, copy it into the
+ * residual data area.
+ */
+ if (r3)
+ __res = *(bd_t *)(r3 + KERNELBASE);
+
+#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));
+ }
+
+ ppc_md.init_IRQ = ppc4xx_pic_init;
+ ppc_md.find_end_of_memory = ibm44x_find_end_of_memory;
+ ppc_md.restart = ibm44x_restart;
+ ppc_md.power_off = ibm44x_power_off;
+ ppc_md.halt = ibm44x_halt;
+
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ ppc_md.progress = gen550_progress;
+#endif /* CONFIG_SERIAL_TEXT_DEBUG */
+#ifdef CONFIG_KGDB
+ ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
+#endif
+
+ /*
+ * The Abatron BDI JTAG debugger does not tolerate others
+ * mucking with the debug registers.
+ */
+#if !defined(CONFIG_BDI_SWITCH)
+ /* Enable internal debug mode */
+ mtspr(SPRN_DBCR0, (DBCR0_IDM));
+
+ /* Clear any residual debug events */
+ mtspr(SPRN_DBSR, 0xffffffff);
+#endif
+}
+
+/* Called from machine_check_exception */
+void platform_machine_check(struct pt_regs *regs)
+{
+#if defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ printk("PLB0: BEAR=0x%08x%08x ACR= 0x%08x BESR= 0x%08x%08x\n",
+ mfdcr(DCRN_PLB0_BEARH), mfdcr(DCRN_PLB0_BEARL),
+ mfdcr(DCRN_PLB0_ACR), mfdcr(DCRN_PLB0_BESRH),
+ mfdcr(DCRN_PLB0_BESRL));
+ printk("PLB1: BEAR=0x%08x%08x ACR= 0x%08x BESR= 0x%08x%08x\n",
+ mfdcr(DCRN_PLB1_BEARH), mfdcr(DCRN_PLB1_BEARL),
+ mfdcr(DCRN_PLB1_ACR), mfdcr(DCRN_PLB1_BESRH),
+ mfdcr(DCRN_PLB1_BESRL));
+#else
+ printk("PLB0: BEAR=0x%08x%08x ACR= 0x%08x BESR= 0x%08x\n",
+ mfdcr(DCRN_PLB0_BEARH), mfdcr(DCRN_PLB0_BEARL),
+ mfdcr(DCRN_PLB0_ACR), mfdcr(DCRN_PLB0_BESR));
+#endif
+ printk("POB0: BEAR=0x%08x%08x BESR0=0x%08x BESR1=0x%08x\n",
+ mfdcr(DCRN_POB0_BEARH), mfdcr(DCRN_POB0_BEARL),
+ mfdcr(DCRN_POB0_BESR0), mfdcr(DCRN_POB0_BESR1));
+ printk("OPB0: BEAR=0x%08x%08x BSTAT=0x%08x\n",
+ mfdcr(DCRN_OPB0_BEARH), mfdcr(DCRN_OPB0_BEARL),
+ mfdcr(DCRN_OPB0_BSTAT));
+}
git://git.onelab.eu / linux-2.6.git / blobdiff