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!

1 files changed, 193 insertions, 0 deletions

diff --git a/arch/ppc/syslib/ibm44x_common.c b/arch/ppc/syslib/ibm44x_common.c
new file mode 100644
index 00000000000..7612e0623f9
--- /dev/null
+++ b/arch/ppc/syslib/ibm44x_common.c
@@ -0,0 +1,193 @@
+/*
+ * arch/ppc/syslib/ibm44x_common.c
+ *
+ * PPC44x system library
+ *
+ * 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
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * 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 <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 <syslib/gen550.h>
+
+phys_addr_t fixup_bigphys_addr(phys_addr_t addr, phys_addr_t size)
+{
+	phys_addr_t page_4gb = 0;
+
+        /*
+	 * Trap the least significant 32-bit portions of an
+	 * 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))
+		page_4gb = PPC44x_IO_PAGE;
+	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_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(void)
+{
+	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 MachineCheckException */
+void platform_machine_check(struct pt_regs *regs)
+{
+    	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));
+	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));
+}