[coreboot] [commit] r5132 - trunk/src/arch/i386/init
repository service
svn at coreboot.org
Fri Feb 19 20:59:03 CET 2010
Author: oxygene
Date: Fri Feb 19 20:59:03 2010
New Revision: 5132
URL: http://tracker.coreboot.org/trac/coreboot/changeset/5132
Log:
Revert deletion of src/arch/i386/init.
Signed-off-by: Patrick Georgi <patrick.georgi at coresystems.de>
Acked-by: Patrick Georgi <patrick.georgi at coresystems.de>
Added:
trunk/src/arch/i386/init/
trunk/src/arch/i386/init/Makefile.inc
- copied unchanged from r5130, trunk/src/arch/i386/init/Makefile.inc
trunk/src/arch/i386/init/bootblock.c
- copied unchanged from r5130, trunk/src/arch/i386/init/bootblock.c
trunk/src/arch/i386/init/bootblock_prologue.c
- copied unchanged from r5130, trunk/src/arch/i386/init/bootblock_prologue.c
trunk/src/arch/i386/init/car.S
- copied unchanged from r5130, trunk/src/arch/i386/init/car.S
trunk/src/arch/i386/init/crt0.S.lb
- copied unchanged from r5130, trunk/src/arch/i386/init/crt0.S.lb
trunk/src/arch/i386/init/entry.S
- copied unchanged from r5130, trunk/src/arch/i386/init/entry.S
trunk/src/arch/i386/init/ldscript.ld
- copied unchanged from r5130, trunk/src/arch/i386/init/ldscript.ld
trunk/src/arch/i386/init/ldscript_apc.lb
- copied unchanged from r5130, trunk/src/arch/i386/init/ldscript_apc.lb
trunk/src/arch/i386/init/ldscript_cbfs.lb
- copied unchanged from r5130, trunk/src/arch/i386/init/ldscript_cbfs.lb
trunk/src/arch/i386/init/ldscript_failover.lb
- copied unchanged from r5130, trunk/src/arch/i386/init/ldscript_failover.lb
trunk/src/arch/i386/init/ldscript_fallback_cbfs.lb
- copied unchanged from r5130, trunk/src/arch/i386/init/ldscript_fallback_cbfs.lb
Copied: trunk/src/arch/i386/init/Makefile.inc (from r5130, trunk/src/arch/i386/init/Makefile.inc)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/Makefile.inc Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/Makefile.inc)
@@ -0,0 +1 @@
+# If you add something to this file, enable it in src/arch/i386/Makefile.inc first.
Copied: trunk/src/arch/i386/init/bootblock.c (from r5130, trunk/src/arch/i386/init/bootblock.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/bootblock.c Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/bootblock.c)
@@ -0,0 +1,47 @@
+#define __PRE_RAM__
+#if CONFIG_LOGICAL_CPUS && \
+ (defined(CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT) || defined(CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT))
+#include <cpu/x86/lapic/boot_cpu.c>
+#else
+#define boot_cpu(x) 1
+#endif
+
+#ifdef CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT
+#include CONFIG_BOOTBLOCK_NORTHBRIDGE_INIT
+#else
+static void bootblock_northbridge_init(void) { }
+#endif
+#ifdef CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT
+#include CONFIG_BOOTBLOCK_SOUTHBRIDGE_INIT
+#else
+static void bootblock_southbridge_init(void) { }
+#endif
+
+static unsigned long findstage(char* target)
+{
+ unsigned long entry;
+ asm volatile (
+ "mov $1f, %%esp\n\t"
+ "jmp walkcbfs\n\t"
+ "1:\n\t" : "=a" (entry) : "S" (target) : "ebx", "ecx", "edi", "esp");
+ return entry;
+}
+
+static void call(unsigned long addr, unsigned long bist)
+{
+ asm volatile ("jmp *%0\n\t" : : "r" (addr), "a" (bist));
+}
+
+static void main(unsigned long bist)
+{
+ if (boot_cpu()) {
+ bootblock_northbridge_init();
+ bootblock_southbridge_init();
+ }
+ const char* target1 = "fallback/romstage";
+ unsigned long entry;
+ entry = findstage(target1);
+ if (entry) call(entry, bist);
+ asm volatile ("1:\n\thlt\n\tjmp 1b\n\t");
+}
+
Copied: trunk/src/arch/i386/init/bootblock_prologue.c (from r5130, trunk/src/arch/i386/init/bootblock_prologue.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/bootblock_prologue.c Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/bootblock_prologue.c)
@@ -0,0 +1,37 @@
+/* -*- asm -*-
+ * $ $
+ *
+ */
+
+/*
+ * Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
+ *
+ * This file 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.
+ *
+ * Originally this code was part of ucl the data compression library
+ * for upx the ``Ultimate Packer of eXecutables''.
+ *
+ * - Converted to gas assembly, and refitted to work with etherboot.
+ * Eric Biederman 20 Aug 2002
+ * - Merged the nrv2b decompressor into crt0.base of coreboot
+ * Eric Biederman 26 Sept 2002
+ */
+
+
+#include <arch/asm.h>
+#include <arch/intel.h>
+#include <console/loglevel.h>
+
+/*
+ * This is the entry code the code in .reset section
+ * jumps to this address.
+ *
+ */
+.section ".rom.data", "a", @progbits
+.section ".rom.text", "ax", @progbits
+
+ intel_chip_post_macro(0x01) /* delay for chipsets */
+
Copied: trunk/src/arch/i386/init/car.S (from r5130, trunk/src/arch/i386/init/car.S)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/car.S Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/car.S)
@@ -0,0 +1,363 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2000,2007 Ronald G. Minnich <rminnich at gmail.com>
+ * Copyright (C) 2005 Eswar Nallusamy, LANL
+ * Copyright (C) 2005 Tyan
+ * (Written by Yinghai Lu <yhlu at tyan.com> for Tyan)
+ * Copyright (C) 2007 coresystems GmbH
+ * (Written by Stefan Reinauer <stepan at coresystems.de> for coresystems GmbH)
+ * Copyright (C) 2008 Carl-Daniel Hailfinger
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* Init code - Switch CPU to protected mode and enable Cache-as-Ram (CAR). */
+
+#include <arch/intel.h>
+
+#define ROM_CODE_SEG 0x08
+#define ROM_DATA_SEG 0x10
+
+#define CACHE_RAM_CODE_SEG 0x18
+#define CACHE_RAM_DATA_SEG 0x20
+
+ /* When we come here we are in protected mode. We expand the stack
+ * and copy the data segment from ROM to the memory.
+ *
+ * After that, we call the chipset bootstrap routine that
+ * does what is left of the chipset initialization.
+ *
+ * NOTE: Aligned to 4 so that we are sure that the prefetch
+ * cache will be reloaded.
+ */
+ .section .rom.text
+ .align 4
+ .globl protected_stage0
+protected_stage0:
+ lgdt %cs:gdtptr
+ ljmp $ROM_CODE_SEG, $__protected_stage0
+
+.globl __protected_stage0
+__protected_stage0:
+ /* Save the BIST result. */
+ movl %eax, %ebp
+
+ intel_chip_post_macro(0x01)
+
+ movw $ROM_DATA_SEG, %ax
+ movw %ax, %ds
+ movw %ax, %es
+ movw %ax, %ss
+ movw %ax, %fs
+ movw %ax, %gs
+
+ /* Restore the BIST value to %eax. */
+ movl %ebp, %eax
+
+.align 4
+
+/* disable HyperThreading is done by eswar
+ * the other is very similar to the AMD CAR, except remove amd specific msr
+ */
+
+#define CacheSize CONFIG_DCACHE_RAM_SIZE
+#define CacheBase CONFIG_DCACHE_RAM_BASE
+
+#include <cpu/x86/mtrr.h>
+
+ /* Save the BIST result */
+ movl %eax, %ebp
+
+CacheAsRam:
+ /* Check whether the processor has HT capability */
+ movl $01, %eax
+ cpuid
+ btl $28, %edx
+ jnc NotHtProcessor
+ bswapl %ebx
+ cmpb $01, %bh
+ jbe NotHtProcessor
+
+ /* It is a HT processor; Send SIPI to the other logical processor
+ * within this processor so that the CAR related common system
+ * registers are programmed accordingly
+ */
+
+ /* Use some register that is common to both logical processors
+ * as semaphore. Refer Appendix B, Vol.3
+ */
+
+ xorl %eax, %eax
+ xorl %edx, %edx
+ movl $0x250, %ecx
+ wrmsr
+
+ /* Figure out the logical AP's APIC ID; the following logic will work
+ * only for processors with 2 threads.
+ *
+ * Refer to Vol 3. Table 7-1 for details about this logic
+ */
+ movl $0xFEE00020, %esi
+ movl (%esi), %ebx
+ andl $0xFF000000, %ebx
+ bswapl %ebx
+ btl $0, %ebx
+ jnc LogicalAP0
+ andb $0xFE, %bl
+ jmp SendSIPI
+LogicalAP0:
+ orb $0x01, %bl
+SendSIPI:
+ bswapl %ebx /* ebx - logical AP's APIC ID */
+
+ /* Fill up the IPI command registers in the Local APIC mapped to
+ * default address and issue SIPI to the other logical processor
+ * within this processor die.
+ */
+
+RetrySIPI:
+ movl %ebx, %eax
+ movl $0xFEE00310, %esi
+ movl %eax, (%esi)
+
+ /* SIPI vector - F900:0000 */
+ movl $0x000006F9, %eax
+ movl $0xFEE00300, %esi
+ movl %eax, (%esi)
+
+ movl $0x30, %ecx
+SIPIDelay:
+ pause
+ decl %ecx
+ jnz SIPIDelay
+
+ movl (%esi), %eax
+ andl $0x00001000, %eax
+ jnz RetrySIPI
+
+ /* Wait for the Logical AP to complete initialization */
+LogicalAPSIPINotdone:
+ movl $0x250, %ecx
+ rdmsr
+ orl %eax, %eax
+ jz LogicalAPSIPINotdone
+
+
+
+NotHtProcessor:
+ /* Set the default memory type and enable fixed and variable MTRRs */
+ movl $MTRRdefType_MSR, %ecx
+ xorl %edx, %edx
+ /* Enable Variable and Fixed MTRRs */
+ movl $0x00000c00, %eax
+ wrmsr
+
+ /* Clear all MTRRs */
+ xorl %edx, %edx
+ movl $fixed_mtrr_msr, %esi
+
+clear_fixed_var_mtrr:
+ lodsl (%esi), %eax
+ testl %eax, %eax
+ jz clear_fixed_var_mtrr_out
+
+ movl %eax, %ecx
+ xorl %eax, %eax
+ wrmsr
+
+ jmp clear_fixed_var_mtrr
+clear_fixed_var_mtrr_out:
+
+/* 0x06 is the WB IO type for a given 4k segment.
+ * segs is the number of 4k segments in the area of the particular
+ * register we want to use for CAR.
+ * reg is the register where the IO type should be stored.
+ */
+.macro extractmask segs, reg
+.if \segs <= 0
+ /* The xorl here is superfluous because at the point of first execution
+ * of this macro, %eax and %edx are cleared. Later invocations of this
+ * macro will have a monotonically increasing segs parameter.
+ */
+ xorl \reg, \reg
+.elseif \segs == 1
+ movl $0x06000000, \reg /* WB IO type */
+.elseif \segs == 2
+ movl $0x06060000, \reg /* WB IO type */
+.elseif \segs == 3
+ movl $0x06060600, \reg /* WB IO type */
+.elseif \segs >= 4
+ movl $0x06060606, \reg /* WB IO type */
+.endif
+.endm
+
+/* size is the cache size in bytes we want to use for CAR.
+ * windowoffset is the 32k-aligned window into CAR size
+ */
+.macro simplemask carsize, windowoffset
+/* DO NOT CHANGE THE FORMATTING of the two lines below! Whitespace is
+ * interpreted as an argument delimiter by some versions of GNU as. */
+ extractmask (((\carsize-\windowoffset)/0x1000)-4), %eax
+ extractmask (((\carsize-\windowoffset)/0x1000)), %edx
+.endm
+
+#if CacheSize > 0x10000
+#error Invalid CAR size, must be at most 64k.
+#endif
+#if CacheSize < 0x1000
+#error Invalid CAR size, must be at least 4k. This is a processor limitation.
+#endif
+#if (CacheSize & (0x1000 - 1))
+#error Invalid CAR size, is not a multiple of 4k. This is a processor limitation.
+#endif
+
+#if CacheSize > 0x8000
+ /* enable caching for 32K-64K using fixed mtrr */
+ movl $0x268, %ecx /* fix4k_c0000*/
+ simplemask CacheSize, 0x8000
+ wrmsr
+#endif
+
+ /* enable caching for 0-32K using fixed mtrr */
+ movl $0x269, %ecx /* fix4k_c8000*/
+ simplemask CacheSize, 0
+ wrmsr
+
+#if defined(CONFIG_XIP_ROM_SIZE) && defined(CONFIG_XIP_ROM_BASE)
+#if defined(CONFIG_TINY_BOOTBLOCK) && CONFIG_TINY_BOOTBLOCK
+#define REAL_XIP_ROM_BASE AUTO_XIP_ROM_BASE
+#else
+#define REAL_XIP_ROM_BASE CONFIG_XIP_ROM_BASE
+#endif
+ /* enable write base caching so we can do execute in place
+ * on the flash rom.
+ */
+ movl $0x202, %ecx
+ xorl %edx, %edx
+ movl $REAL_XIP_ROM_BASE, %eax
+ orl $MTRR_TYPE_WRBACK, %eax
+ wrmsr
+
+ movl $0x203, %ecx
+ movl $0x0000000f, %edx
+ movl $(~(CONFIG_XIP_ROM_SIZE - 1) | 0x800), %eax
+ wrmsr
+#endif /* CONFIG_XIP_ROM_SIZE && CONFIG_XIP_ROM_BASE */
+
+ /* enable cache */
+ movl %cr0, %eax
+ andl $0x9fffffff,%eax
+ movl %eax, %cr0
+
+ /* Read the range with lodsl*/
+ movl $CacheBase, %esi
+ cld
+ movl $(CacheSize>>2), %ecx
+ rep lodsl
+
+ /* Clear the range */
+ movl $CacheBase, %edi
+ movl $(CacheSize>>2), %ecx
+ xorl %eax, %eax
+ rep stosl
+
+
+ /* TODO: make this a config variable */
+#if CARTEST
+ /* check the cache as ram */
+ movl $CacheBase, %esi
+ movl $(CacheSize>>2), %ecx
+.xin1:
+ movl %esi, %eax
+ movl %eax, (%esi)
+ decl %ecx
+ je .xout1
+ add $4, %esi
+ jmp .xin1
+.xout1:
+
+ movl $CacheBase, %esi
+// movl $(CacheSize>>2), %ecx
+ movl $4, %ecx
+.xin1x:
+ movl %esi, %eax
+
+ movl $0x4000, %edx
+ movb %ah, %al
+.testx1:
+ outb %al, $0x80
+ decl %edx
+ jnz .testx1
+
+ movl (%esi), %eax
+ cmpb 0xff, %al
+ je .xin2 /* dont show */
+
+ movl $0x4000, %edx
+.testx2:
+ outb %al, $0x80
+ decl %edx
+ jnz .testx2
+
+.xin2: decl %ecx
+ je .xout1x
+ add $4, %esi
+ jmp .xin1x
+.xout1x:
+
+#endif
+
+ movl $(CacheBase+CacheSize-4), %eax
+ movl %eax, %esp
+
+ /* Load a different set of data segments */
+ movw $CACHE_RAM_DATA_SEG, %ax
+ movw %ax, %ds
+ movw %ax, %es
+ movw %ax, %ss
+
+lout:
+ /* Store zero for the pointer to the global variables. */
+ pushl $0
+
+ /* Restore the BIST result. */
+ movl %ebp, %eax
+
+ /* We need to set ebp? No need. */
+ movl %esp, %ebp
+
+ /* Third parameter: cpu #: 0 == BSP all other are APs.
+ * 0 until SMP support is added.
+ */
+ pushl $0
+ /* Second parameter: init_detected */
+ /* Store zero for the unused init_detected parameter. */
+ pushl $0
+ /* First parameter: bist */
+ pushl %eax
+ call main
+ /* We will not go back. */
+
+fixed_mtrr_msr:
+ .long 0x250, 0x258, 0x259
+ .long 0x268, 0x269, 0x26A
+ .long 0x26B, 0x26C, 0x26D
+ .long 0x26E, 0x26F
+var_mtrr_msr:
+ .long 0x200, 0x201, 0x202, 0x203
+ .long 0x204, 0x205, 0x206, 0x207
+ .long 0x208, 0x209, 0x20A, 0x20B
+ .long 0x20C, 0x20D, 0x20E, 0x20F
+ .long 0x000 /* NULL, end of table */
Copied: trunk/src/arch/i386/init/crt0.S.lb (from r5130, trunk/src/arch/i386/init/crt0.S.lb)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/crt0.S.lb Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/crt0.S.lb)
@@ -0,0 +1,143 @@
+/* -*- asm -*-
+ * $ $
+ *
+ */
+
+/*
+ * Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
+ *
+ * This file 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.
+ *
+ * Originally this code was part of ucl the data compression library
+ * for upx the ``Ultimate Packer of eXecutables''.
+ *
+ * - Converted to gas assembly, and refitted to work with etherboot.
+ * Eric Biederman 20 Aug 2002
+ * - Merged the nrv2b decompressor into crt0.base of coreboot
+ * Eric Biederman 26 Sept 2002
+ */
+
+
+#include <arch/asm.h>
+#include <arch/intel.h>
+#include <console/loglevel.h>
+
+/*
+ * This is the entry code the code in .reset section
+ * jumps to this address.
+ *
+ */
+.section ".rom.data", "a", @progbits
+.section ".rom.text", "ax", @progbits
+
+ intel_chip_post_macro(0x01) /* delay for chipsets */
+
+#include "crt0_includes.h"
+
+#if CONFIG_USE_DCACHE_RAM == 0
+#ifndef CONSOLE_DEBUG_TX_STRING
+ /* uses: esp, ebx, ax, dx */
+# define __CRT_CONSOLE_TX_STRING(string) \
+ mov string, %ebx ; \
+ CALLSP(crt_console_tx_string)
+
+# if defined(CONFIG_TTYS0_BASE) && (ASM_CONSOLE_LOGLEVEL > BIOS_DEBUG)
+# define CONSOLE_DEBUG_TX_STRING(string) __CRT_CONSOLE_TX_STRING(string)
+# else
+# define CONSOLE_DEBUG_TX_STRING(string)
+# endif
+#endif
+
+ /* clear boot_complete flag */
+ xorl %ebp, %ebp
+__main:
+ CONSOLE_DEBUG_TX_STRING($str_copying_to_ram)
+
+ /*
+ * Copy data into RAM and clear the BSS. Since these segments
+ * isn\'t really that big we just copy/clear using bytes, not
+ * double words.
+ */
+ intel_chip_post_macro(0x11) /* post 11 */
+
+ cld /* clear direction flag */
+
+ /* copy coreboot from it's initial load location to
+ * the location it is compiled to run at.
+ * Normally this is copying from FLASH ROM to RAM.
+ */
+ movl %ebp, %esi
+ /* FIXME: look for a proper place for the stack */
+ movl $0x4000000, %esp
+ movl %esp, %ebp
+ pushl %esi
+ pushl $str_coreboot_ram_name
+ call cbfs_and_run_core
+
+.Lhlt:
+ intel_chip_post_macro(0xee) /* post fe */
+ hlt
+ jmp .Lhlt
+
+#ifdef __CRT_CONSOLE_TX_STRING
+ /* Uses esp, ebx, ax, dx */
+crt_console_tx_string:
+ mov (%ebx), %al
+ inc %ebx
+ cmp $0, %al
+ jne 9f
+ RETSP
+9:
+/* Base Address */
+#ifndef CONFIG_TTYS0_BASE
+#define CONFIG_TTYS0_BASE 0x3f8
+#endif
+/* Data */
+#define TTYS0_RBR (CONFIG_TTYS0_BASE+0x00)
+
+/* Control */
+#define TTYS0_TBR TTYS0_RBR
+#define TTYS0_IER (CONFIG_TTYS0_BASE+0x01)
+#define TTYS0_IIR (CONFIG_TTYS0_BASE+0x02)
+#define TTYS0_FCR TTYS0_IIR
+#define TTYS0_LCR (CONFIG_TTYS0_BASE+0x03)
+#define TTYS0_MCR (CONFIG_TTYS0_BASE+0x04)
+#define TTYS0_DLL TTYS0_RBR
+#define TTYS0_DLM TTYS0_IER
+
+/* Status */
+#define TTYS0_LSR (CONFIG_TTYS0_BASE+0x05)
+#define TTYS0_MSR (CONFIG_TTYS0_BASE+0x06)
+#define TTYS0_SCR (CONFIG_TTYS0_BASE+0x07)
+
+ mov %al, %ah
+10: mov $TTYS0_LSR, %dx
+ inb %dx, %al
+ test $0x20, %al
+ je 10b
+ mov $TTYS0_TBR, %dx
+ mov %ah, %al
+ outb %al, %dx
+
+ jmp crt_console_tx_string
+#endif /* __CRT_CONSOLE_TX_STRING */
+
+#if defined(CONSOLE_DEBUG_TX_STRING) && (ASM_CONSOLE_LOGLEVEL > BIOS_DEBUG)
+.section ".rom.data"
+#if CONFIG_COMPRESS
+str_copying_to_ram: .string "Uncompressing coreboot to RAM.\r\n"
+#else
+str_copying_to_ram: .string "Copying coreboot to RAM.\r\n"
+#endif
+str_pre_main: .string "Jumping to coreboot.\r\n"
+.previous
+
+#endif /* ASM_CONSOLE_LOGLEVEL > BIOS_DEBUG */
+
+str_coreboot_ram_name: .ascii CONFIG_CBFS_PREFIX
+ .string "/coreboot_ram"
+
+#endif /* CONFIG_USE_DCACHE_RAM */
Copied: trunk/src/arch/i386/init/entry.S (from r5130, trunk/src/arch/i386/init/entry.S)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/entry.S Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/entry.S)
@@ -0,0 +1,156 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 1999 Ronald G. Minnich
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <arch/rom_segs.h>
+ .code16
+ .globl _stage0
+_stage0:
+ cli
+
+ /* Save the BIST result. */
+ movl %eax, %ebp;
+
+ /* thanks to kmliu at sis.com.tw for this TLB fix */
+ /* IMMEDIATELY invalidate the translation lookaside buffer (TLB) before
+ * executing any further code. Even though paging is disabled we
+ * could still get false address translations due to the TLB if we
+ * didn't invalidate it.
+ */
+ xorl %eax, %eax
+ movl %eax, %cr3 /* Invalidate TLB. */
+
+ /* Switch to protected mode. */
+
+ /* NOTE: With GNU assembler version 2.15.94.0.2.2 (i386-redhat-linux)
+ * using BFD version 2.15.94.0.2.2 20041220 this works fine without all
+ * the ld hackery and other things. So leave it as is with this comment.
+ */
+
+ data32 lgdt %cs:gdtptr
+
+ movl %cr0, %eax
+ andl $0x7FFAFFD1, %eax /* PG, AM, WP, NE, TS, EM, MP = 0 */
+ orl $0x60000001, %eax /* CD, NW, PE = 1 */
+ movl %eax, %cr0
+
+ /* Restore BIST result. */
+ movl %ebp, %eax
+
+ // port80_post(0x23)
+ /* Now we are in protected mode. Jump to a 32 bit code segment. */
+ data32 ljmp $ROM_CODE_SEG, $protected_stage0
+
+ /* I am leaving this weird jump in here in the event that future gas
+ * bugs force it to be used.
+ */
+ /* .byte 0x66 */
+ .code32
+ /* ljmp $ROM_CODE_SEG, $protected_stage0 */
+
+ /* .code16 */
+ .align 4
+ .globl gdt16
+gdt16 = . - _stage0
+gdt16x:
+ .word gdt16xend - gdt16x -1 /* Compute the table limit. */
+ .long gdt16x
+ .word 0
+
+ /* selgdt 0x08, flat code segment */
+ .word 0xffff, 0x0000
+ .byte 0x00, 0x9b, 0xcf, 0x00
+
+ /* selgdt 0x10, flat data segment */
+ .word 0xffff, 0x0000
+ .byte 0x00, 0x93, 0xcf, 0x00
+gdt16xend:
+
+ /* From now on we are 32 bit. */
+ .code32
+
+ /* We have two gdts where we could have one. That is ok.
+ *
+ * Let's not worry about this -- optimizing gdt is pointless since
+ * we're only in it for a little bit.
+ *
+ * Btw. note the trick below: The GDT points to ITSELF, and the first
+ * good descriptor is at offset 8. So you word-align the table, and
+ * then because you chose 8, you get a nice 64-bit aligned GDT entry,
+ * which is good as this is the size of the entry.
+ * Just in case you ever wonder why people do this.
+ */
+ .align 4
+ .globl gdtptr
+ .globl gdt_limit
+gdt_limit = gdt_end - gdt - 1 /* Compute the table limit. */
+
+gdt:
+gdtptr:
+ .word gdt_end - gdt -1 /* Compute the table limit. */
+ .long gdt /* We know the offset. */
+ .word 0
+
+ /* selgdt 0x08, flat code segment */
+ .word 0xffff, 0x0000
+ .byte 0x00, 0x9b, 0xcf, 0x00
+
+ /* selgdt 0x10, flat data segment */
+ .word 0xffff, 0x0000
+ .byte 0x00, 0x93, 0xcf, 0x00
+
+ /* selgdt 0x18, flat code segment for CAR */
+ .word 0xffff, 0x0000
+ .byte 0x00, 0x9b, 0xcf, 0x00
+
+ /* selgdt 0x20, flat data segment for CAR */
+ .word 0xffff, 0x0000
+ .byte 0x00, 0x93, 0xcf, 0x00
+gdt_end:
+
+/* Reset vector. */
+
+/*
+ * RVECTOR: Size of reset vector, default is 0x10.
+ * RESRVED: Size of vpd code, default is 0xf0.
+ * BOOTBLK: Size of bootblock code, default is 0x1f00 (8k-256b).
+ */
+
+SEGMENT_SIZE = 0x10000
+RVECTOR = 0x00010
+
+/* Due to YET ANOTHER BUG in GNU bintools, you can NOT have a code16 here.
+ * I think we should leave it this way forever, as the bugs come and
+ * go -- and come again.
+ *
+ * .code16
+ * .section ".rom.text"
+ */
+.section ".reset", "ax"
+ .globl _resetjump
+_resetjump:
+ /* GNU bintools bugs again. This jumps to stage0 - 2. Sigh. */
+ /* jmp _stage0 */
+ .byte 0xe9
+ .int _stage0 - ( . + 2 )
+
+ /* Note: The above jump is hand coded to work around bugs in binutils.
+ * 5 bytes are used for a 3 byte instruction. This works because x86
+ * is little endian and allows us to use supported 32 bit relocations
+ * instead of the weird 16 bit relocations that binutils does not
+ * handle consistenly between versions because they are used so rarely.
+ */
Copied: trunk/src/arch/i386/init/ldscript.ld (from r5130, trunk/src/arch/i386/init/ldscript.ld)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/ldscript.ld Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/ldscript.ld)
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007 Ronald G. Minnich <rminnich at gmail.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+TARGET(binary)
+SECTIONS
+{
+ /DISCARD/ : {
+ *(.comment)
+ *(.note.*)
+ *(.note)
+ }
+}
+
+SECTIONS {
+ _ROMTOP = 0xfffffff0;
+ . = _ROMTOP;
+ .resetvector . : {
+ *(.reset)
+ . = 15 ;
+ BYTE(0x00);
+ }
+}
+
Copied: trunk/src/arch/i386/init/ldscript_apc.lb (from r5130, trunk/src/arch/i386/init/ldscript_apc.lb)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/ldscript_apc.lb Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/ldscript_apc.lb)
@@ -0,0 +1,13 @@
+INPUT(coreboot_apc.rom)
+SECTIONS
+{
+ .apcrom . : {
+ _apcrom = .;
+ coreboot_apc.rom(*)
+ _eapcrom = .;
+ }
+ _iseg_apc = CONFIG_DCACHE_RAM_BASE;
+ _eiseg_apc = _iseg_apc + SIZEOF(.apcrom);
+ _liseg_apc = _apcrom;
+ _eliseg_apc = _eapcrom;
+}
Copied: trunk/src/arch/i386/init/ldscript_cbfs.lb (from r5130, trunk/src/arch/i386/init/ldscript_cbfs.lb)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/ldscript_cbfs.lb Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/ldscript_cbfs.lb)
@@ -0,0 +1,59 @@
+/*
+ * Memory map:
+ *
+ * CONFIG_RAMBASE
+ * : data segment
+ * : bss segment
+ * : heap
+ * : stack
+ * CONFIG_ROMBASE
+ * : coreboot text
+ * : readonly text
+ */
+/*
+ * Bootstrap code for the STPC Consumer
+ * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
+ *
+ */
+
+/*
+ * Written by Johan Rydberg, based on work by Daniel Kahlin.
+ * Rewritten by Eric Biederman
+ */
+/*
+ * We use ELF as output format. So that we can
+ * debug the code in some form.
+ */
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+
+/*
+ENTRY(_start)
+*/
+
+TARGET(binary)
+SECTIONS
+{
+ . = CONFIG_ROMBASE;
+
+ /* This section might be better named .setup */
+ .rom . : {
+ _rom = .;
+ *(.rom.text);
+ *(.rom.data);
+ *(.rodata.*);
+ *(.rom.data.*);
+ . = ALIGN(16);
+ _erom = .;
+ }
+
+ _lrom = LOADADDR(.rom);
+ _elrom = LOADADDR(.rom) + SIZEOF(.rom);
+
+ /DISCARD/ : {
+ *(.comment)
+ *(.comment.*)
+ *(.note)
+ *(.note.*)
+ }
+}
Copied: trunk/src/arch/i386/init/ldscript_failover.lb (from r5130, trunk/src/arch/i386/init/ldscript_failover.lb)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/ldscript_failover.lb Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/ldscript_failover.lb)
@@ -0,0 +1,59 @@
+/*
+ * Memory map:
+ *
+ * CONFIG_RAMBASE
+ * : data segment
+ * : bss segment
+ * : heap
+ * : stack
+ * CONFIG_ROMBASE
+ * : coreboot text
+ * : readonly text
+ */
+/*
+ * Bootstrap code for the STPC Consumer
+ * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
+ *
+ */
+
+/*
+ * Written by Johan Rydberg, based on work by Daniel Kahlin.
+ * Rewritten by Eric Biederman
+ */
+/*
+ * We use ELF as output format. So that we can
+ * debug the code in some form.
+ */
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+
+/*
+ENTRY(_start)
+*/
+
+TARGET(binary)
+SECTIONS
+{
+ . = CONFIG_ROMBASE;
+
+ /* This section might be better named .setup */
+ .rom . : {
+ _rom = .;
+ *(.rom.text);
+ *(.rom.data);
+ *(.rom.data.*);
+ *(.rodata.*);
+ . = ALIGN(16);
+ _erom = .;
+ }
+
+ _lrom = LOADADDR(.rom);
+ _elrom = LOADADDR(.rom) + SIZEOF(.rom);
+
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ *(.comment.*)
+ *(.note.*)
+ }
+}
Copied: trunk/src/arch/i386/init/ldscript_fallback_cbfs.lb (from r5130, trunk/src/arch/i386/init/ldscript_fallback_cbfs.lb)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/src/arch/i386/init/ldscript_fallback_cbfs.lb Fri Feb 19 20:59:03 2010 (r5132, copy of r5130, trunk/src/arch/i386/init/ldscript_fallback_cbfs.lb)
@@ -0,0 +1,65 @@
+/*
+ * Memory map:
+ *
+ * CONFIG_RAMBASE
+ * : data segment
+ * : bss segment
+ * : heap
+ * : stack
+ * CONFIG_ROMBASE
+ * : coreboot text
+ * : readonly text
+ */
+/*
+ * Bootstrap code for the STPC Consumer
+ * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
+ *
+ */
+
+/*
+ * Written by Johan Rydberg, based on work by Daniel Kahlin.
+ * Rewritten by Eric Biederman
+ */
+/*
+ * We use ELF as output format. So that we can
+ * debug the code in some form.
+ */
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+
+/*
+ENTRY(_start)
+*/
+
+TARGET(binary)
+SECTIONS
+{
+ . = CONFIG_ROMBASE;
+
+ /* cut _start into last 64k*/
+ _x = .;
+ . = (_x < (CONFIG_ROMBASE - 0x10000 + CONFIG_ROM_IMAGE_SIZE)) ? (CONFIG_ROMBASE - 0x10000 + CONFIG_ROM_IMAGE_SIZE) : _x;
+
+ /* This section might be better named .setup */
+ .rom . : {
+ _rom = .;
+ *(.rom.text);
+ *(.rom.data);
+ *(.init.rodata.*);
+ *(.init.text);
+ *(.rodata.*);
+ *(.rom.data.*);
+ . = ALIGN(16);
+ _erom = .;
+ }
+
+ _lrom = LOADADDR(.rom);
+ _elrom = LOADADDR(.rom) + SIZEOF(.rom);
+
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ *(.comment.*)
+ *(.note.*)
+ }
+}
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