Merge branch 'master' of git://www.denx.de/git/u-boot-x86

Makefile

@@ -231,8 +231,8 @@ endif
 
 OBJS  = $(CPUDIR)/start.o
 ifeq ($(CPU),x86)
-OBJS += $(CPUDIR)/start16.o
+RESET_OBJS-$(CONFIG_X86_NO_RESET_VECTOR) += $(CPUDIR)/start16.o
-OBJS += $(CPUDIR)/resetvec.o
+RESET_OBJS-$(CONFIG_X86_NO_RESET_VECTOR) += $(CPUDIR)/resetvec.o
 endif
 ifeq ($(CPU),ppc4xx)
 OBJS += $(CPUDIR)/resetvec.o
@@ -241,7 +241,7 @@ ifeq ($(CPU),mpc85xx)
 OBJS += $(CPUDIR)/resetvec.o
 endif
 
-OBJS := $(addprefix $(obj),$(OBJS))
+OBJS := $(addprefix $(obj),$(OBJS) $(RESET_OBJS-))
 
 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard board/$(VENDOR)/common/Makefile),y,n)
 

README

@@ -3664,6 +3664,10 @@ Low Level (hardware related) configuration options:
 		be used if available. These functions may be faster under some
 		conditions but may increase the binary size.
 
+- CONFIG_X86_NO_RESET_VECTOR
+		If defined, the x86 reset vector code is excluded. You will need
+		to do this when U-Boot is running from Coreboot.
+
 Freescale QE/FMAN Firmware Support:
 -----------------------------------
 

arch/x86/cpu/Makefile

@@ -28,12 +28,13 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(CPU).o
 
-START	= start.o start16.o resetvec.o
+START-y	= start.o
+RESET_OBJS-$(CONFIG_X86_NO_RESET_VECTOR) += resetvec.o start16.o
 COBJS	= interrupts.o cpu.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
-START	:= $(addprefix $(obj),$(START))
+START	:= $(addprefix $(obj),$(START-y) $(RESET_OBJS-))
 
 all:	$(obj).depend $(START) $(LIB)
 

arch/x86/cpu/coreboot/Makefile

@@ -33,10 +33,12 @@ include $(TOPDIR)/config.mk
 
 LIB	:= $(obj)lib$(SOC).o
 
+COBJS-$(CONFIG_SYS_COREBOOT) += coreboot.o
 COBJS-$(CONFIG_SYS_COREBOOT) += tables.o
 COBJS-$(CONFIG_SYS_COREBOOT) += ipchecksum.o
 COBJS-$(CONFIG_SYS_COREBOOT) += sdram.o
 COBJS-$(CONFIG_SYS_COREBOOT) += sysinfo.o
+COBJS-$(CONFIG_PCI) += pci.o
 
 SOBJS-$(CONFIG_SYS_COREBOOT) += coreboot_car.o
 

arch/x86/cpu/coreboot/pci.c

@@ -25,6 +25,41 @@
  * MA 02111-1307 USA
  */
 
+#include <common.h>
+#include <pci.h>
+#include <asm/pci.h>
+
+static struct pci_controller coreboot_hose;
+
+static void config_pci_bridge(struct pci_controller *hose, pci_dev_t dev,
+			      struct pci_config_table *table)
+{
+	u8 secondary;
+	hose->read_byte(hose, dev, PCI_SECONDARY_BUS, &secondary);
+	hose->last_busno = max(hose->last_busno, secondary);
+	pci_hose_scan_bus(hose, secondary);
+}
+
+static struct pci_config_table pci_coreboot_config_table[] = {
+	/* vendor, device, class, bus, dev, func */
+	{ PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_PCI,
+		PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, &config_pci_bridge },
+	{}
+};
+
 void pci_init_board(void)
 {
+	coreboot_hose.config_table = pci_coreboot_config_table;
+	coreboot_hose.first_busno = 0;
+	coreboot_hose.last_busno = 0;
+
+	pci_set_region(coreboot_hose.regions + 0, 0x0, 0x0, 0xffffffff,
+		PCI_REGION_MEM);
+	coreboot_hose.region_count = 1;
+
+	pci_setup_type1(&coreboot_hose);
+
+	pci_register_hose(&coreboot_hose);
+
+	pci_hose_scan(&coreboot_hose);
 }

arch/x86/cpu/cpu.c

@@ -90,12 +90,6 @@ static void load_gdt(const u64 *boot_gdt, u16 num_entries)
 	asm volatile("lgdtl %0\n" : : "m" (gdt));
 }
 
-void init_gd(gd_t *id, u64 *gdt_addr)
-{
-	id->gd_addr = (ulong)id;
-	setup_gdt(id, gdt_addr);
-}
-
 void setup_gdt(gd_t *id, u64 *gdt_addr)
 {
 	/* CS: code, read/execute, 4 GB, base 0 */

arch/x86/cpu/start.S

@@ -83,13 +83,33 @@ car_init_ret:
 	 * or fully initialised SDRAM - we really don't care which)
 	 * starting at CONFIG_SYS_CAR_ADDR to be used as a temporary stack
 	 */
-	movl	$CONFIG_SYS_INIT_SP_ADDR, %esp
 
-	/* Initialise the Global Data Pointer */
+	/* Stack grows down from top of CAR */
-	movl	$CONFIG_SYS_INIT_GD_ADDR, %eax
+	movl	$(CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE), %esp
-	movl	%eax, %edx
+
-	addl	$GENERATED_GBL_DATA_SIZE, %edx
+	/* Reserve space on stack for global data */
-	call	init_gd;
+	subl	$GENERATED_GBL_DATA_SIZE, %esp
+
+	/* Align global data to 16-byte boundary */
+	andl	$0xfffffff0, %esp
+
+	/* Setup first parameter to setup_gdt */
+	movl	%esp, %eax
+
+	/* Reserve space for global descriptor table */
+	subl	$X86_GDT_SIZE, %esp
+
+	/* Align temporary global descriptor table to 16-byte boundary */
+	andl	$0xfffffff0, %esp
+
+	/* Set second parameter to setup_gdt */
+	movl	%esp, %edx
+
+	/* gd->gd_addr = gd (Required to allow gd->xyz to work) */
+	movl	%eax, (%eax)
+
+	/* Setup global descriptor table so gd->xyz works */
+	call	setup_gdt
 
 	/* Set parameter to board_init_f() to boot flags */
 	xorl	%eax, %eax
@@ -113,9 +133,42 @@ board_init_f_r_trampoline:
 	 * %eax = Address of top of new stack
 	 */
 
-	/* Setup stack in RAM */
+	/* Stack grows down from top of SDRAM */
 	movl	%eax, %esp
 
+	/* Reserve space on stack for global data */
+	subl	$GENERATED_GBL_DATA_SIZE, %esp
+
+	/* Align global data to 16-byte boundary */
+	andl	$0xfffffff0, %esp
+
+	/* Setup first parameter to memcpy (and setup_gdt) */
+	movl	%esp, %eax
+
+	/* Setup second parameter to memcpy */
+	fs movl 0, %edx
+
+	/* Set third parameter to memcpy */
+	movl	$GENERATED_GBL_DATA_SIZE, %ecx
+
+	/* Copy global data from CAR to SDRAM stack */
+	call	memcpy
+
+	/* Reserve space for global descriptor table */
+	subl	$X86_GDT_SIZE, %esp
+
+	/* Align global descriptor table to 16-byte boundary */
+	andl	$0xfffffff0, %esp
+
+	/* Set second parameter to setup_gdt */
+	movl	%esp, %edx
+
+	/* gd->gd_addr = gd (Required to allow gd->xyz to work) */
+	movl	%eax, (%eax)
+
+	/* Setup global descriptor table so gd->xyz works */
+	call	setup_gdt
+
 	/* Re-enter U-Boot by calling board_init_f_r */
 	call	board_init_f_r
 

arch/x86/cpu/u-boot.lds

@@ -86,6 +86,8 @@ SECTIONS
 	__bios_start = LOADADDR(.bios);
 	__bios_size = SIZEOF(.bios);
 
+#ifndef CONFIG_X86_NO_RESET_VECTOR
+
 	/*
 	 * The following expressions place the 16-bit Real-Mode code and
 	 * Reset Vector at the end of the Flash ROM
@@ -95,4 +97,5 @@ SECTIONS
 
 	. = RESET_VEC_LOC;
 	.resetvec : AT (CONFIG_SYS_TEXT_BASE + (CONFIG_SYS_MONITOR_LEN - RESET_SEG_SIZE + RESET_VEC_LOC)) { KEEP(*(.resetvec)); }
+#endif
 }

arch/x86/include/asm/bitops.h

@@ -351,6 +351,11 @@ static __inline__ int ffs(int x)
 }
 #define PLATFORM_FFS
 
+static inline int __ilog2(unsigned int x)
+{
+	return generic_fls(x) - 1;
+}
+
 /**
  * hweightN - returns the hamming weight of a N-bit word
  * @x: the word to weigh

arch/x86/include/asm/global_data.h

@@ -33,9 +33,13 @@
 
 #ifndef __ASSEMBLY__
 
-typedef	struct global_data {
+#include <asm/u-boot.h>
+
+typedef struct global_data gd_t;
+
+struct global_data {
 	/* NOTE: gd_addr MUST be first member of struct global_data! */
-	unsigned long	gd_addr;	/* Location of Global Data */
+	gd_t *gd_addr;	/* Location of Global Data */
 	bd_t		*bd;
 	unsigned long	flags;
 	unsigned int	baudrate;
@@ -52,12 +56,11 @@ typedef	struct global_data {
 	unsigned long	relocaddr;	/* Start address of U-Boot in RAM */
 	unsigned long	start_addr_sp;	/* start_addr_stackpointer */
 	unsigned long	gdt_addr;	/* Location of GDT */
-	unsigned long	new_gd_addr;	/* New location of Global Data */
 	phys_size_t	ram_size;	/* RAM size */
 	unsigned long	reset_status;	/* reset status register at boot */
 	void		**jt;		/* jump table */
 	char		env_buf[32];	/* buffer for getenv() before reloc. */
-} gd_t;
+};
 
 static inline gd_t *get_fs_gd_ptr(void)
 {

arch/x86/include/asm/init_helpers.h

@@ -29,7 +29,6 @@ int display_dram_config(void);
 int init_baudrate_f(void);
 int calculate_relocation_address(void);
 
-int copy_gd_to_ram_f_r(void);
 int init_cache_f_r(void);
 
 int set_reloc_flag_r(void);

arch/x86/include/asm/io.h

@@ -234,4 +234,12 @@ static inline phys_addr_t virt_to_phys(void * vaddr)
 	return (phys_addr_t)(vaddr);
 }
 
+/*
+ * TODO: The kernel offers some more advanced versions of barriers, it might
+ * have some advantages to use them instead of the simple one here.
+ */
+#define dmb()		__asm__ __volatile__ ("" : : : "memory")
+#define __iormb()	dmb()
+#define __iowmb()	dmb()
+
 #endif

arch/x86/include/asm/pci.h

@@ -24,7 +24,7 @@
  */
 
 #ifndef _PCI_I386_H_
-#define _PCI_I386_H_	1
+#define _PCI_I386_H_
 
 #define DEFINE_PCI_DEVICE_TABLE(_table) \
 	const struct pci_device_id _table[]

arch/x86/include/asm/processor.h

@@ -41,6 +41,7 @@ enum {
 #else
 /* NOTE: If the above enum is modified, this define must be checked */
 #define X86_GDT_ENTRY_32BIT_DS	3
+#define X86_GDT_NUM_ENTRIES	7
 #endif
 
 #define X86_GDT_SIZE		(X86_GDT_NUM_ENTRIES * X86_GDT_ENTRY_SIZE)

arch/x86/include/asm/u-boot.h

@@ -36,6 +36,9 @@
 #ifndef _U_BOOT_H_
 #define _U_BOOT_H_	1
 
+#include <config.h>
+#include <compiler.h>
+
 typedef struct bd_info {
 	unsigned long	bi_memstart;	/* start of DRAM memory */
 	phys_size_t	bi_memsize;	/* size	 of DRAM memory in bytes */

arch/x86/lib/board.c

@@ -36,6 +36,7 @@
 #include <stdio_dev.h>
 #include <asm/u-boot-x86.h>
 #include <asm/relocate.h>
+#include <asm/processor.h>
 
 #include <asm/init_helpers.h>
 #include <asm/init_wrappers.h>
@@ -121,7 +122,6 @@ init_fnc_t *init_sequence_f[] = {
  * initialise the CPU caches (to speed up the relocation process)
  */
 init_fnc_t *init_sequence_f_r[] = {
-	copy_gd_to_ram_f_r,
 	init_cache_f_r,
 	copy_uboot_to_ram,
 	clear_bss,
@@ -164,9 +164,6 @@ init_fnc_t *init_sequence_r[] = {
 #ifdef CONFIG_MISC_INIT_R
 	misc_init_r,
 #endif
-#if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
-	pci_init_r,
-#endif
 #if defined(CONFIG_CMD_KGDB)
 	kgdb_init_r,
 #endif

arch/x86/lib/init_helpers.c

@@ -83,18 +83,8 @@ int calculate_relocation_address(void)
 	 *       requirements
 	 */
 
-	/* Global Data is at top of available memory */
+	/* Stack is at top of available memory */
 	dest_addr = gd->ram_size;
-	dest_addr -= GENERATED_GBL_DATA_SIZE;
-	dest_addr &= ~15;
-	gd->new_gd_addr = dest_addr;
-
-	/* GDT is below Global Data */
-	dest_addr -= X86_GDT_SIZE;
-	dest_addr &= ~15;
-	gd->gdt_addr = dest_addr;
-
-	/* Stack is below GDT */
 	gd->start_addr_sp = dest_addr;
 
 	/* U-Boot is below the stack */
@@ -107,31 +97,6 @@ int calculate_relocation_address(void)
 	return 0;
 }
 
-int copy_gd_to_ram_f_r(void)
-{
-	gd_t *ram_gd;
-
-	/*
-	 * Global data is still in temporary memory (the CPU cache).
-	 * calculate_relocation_address() has set gd->new_gd_addr to
-	 * where the global data lives in RAM but getting it there
-	 * safely is a bit tricky due to the 'F-Segment Hack' that
-	 * we need to use for x86
-	 */
-	ram_gd = (gd_t *)gd->new_gd_addr;
-	memcpy((void *)ram_gd, gd, sizeof(gd_t));
-
-	/*
-	 * Reload the Global Descriptor Table so FS points to the
-	 * in-RAM copy of Global Data (calculate_relocation_address()
-	 * has already calculated the in-RAM location of the GDT)
-	 */
-	ram_gd->gd_addr = (ulong)ram_gd;
-	init_gd(ram_gd, (u64 *)gd->gdt_addr);
-
-	return 0;
-}
-
 int init_cache_f_r(void)
 {
 	/* Initialise the CPU cache(s) */

board/chromebook-x86/coreboot/Makefile

@@ -32,8 +32,6 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS-y	+= coreboot.o
-COBJS-$(CONFIG_PCI) += coreboot_pci.o
 SOBJS-y	+= coreboot_start16.o
 SOBJS-y	+= coreboot_start.o
 

board/chromebook-x86/coreboot/config.mk

@@ -0,0 +1,37 @@
+#
+# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Alternatively, this software may be distributed under the terms of the
+# GNU General Public License ("GPL") version 2 as published by the Free
+# Software Foundation.
+#
+
+HOSTCFLAGS_autoconf.mk.dep = -Wno-variadic-macros

board/chromebook-x86/coreboot/coreboot_start16.S

@@ -22,19 +22,6 @@
  * MA 02111-1307 USA
  */
 
-/*
- * 16bit initialization code.
- * This code have to map the area of the boot flash
- * that is used by U-boot to its final destination.
- */
-
-.text
-.section .start16, "ax"
-.code16
-.globl board_init16
-board_init16:
-	jmp	board_init16_ret
-
 .section .bios, "ax"
 .code16
 .globl realmode_reset

include/configs/coreboot.h

@@ -37,7 +37,7 @@
 #define CONFIG_SYS_COREBOOT
 #undef CONFIG_SHOW_BOOT_PROGRESS
 #define CONFIG_LAST_STAGE_INIT
-
+#define CONFIG_X86_NO_RESET_VECTOR
 
 /*-----------------------------------------------------------------------
  * Watchdog Configuration
@@ -67,6 +67,10 @@
 					 CONFIG_SYS_SCSI_MAX_LUN)
 #endif
 
+/* Generic TPM interfaced through LPC bus */
+#define CONFIG_GENERIC_LPC_TPM
+#define CONFIG_TPM_TIS_BASE_ADDRESS        0xfed40000
+
 /*-----------------------------------------------------------------------
  * Real Time Clock Configuration
  */
@@ -210,12 +214,11 @@
  * (128kB + Environment Sector Size) malloc pool
  */
 #define CONFIG_SYS_STACK_SIZE			(32 * 1024)
-#define CONFIG_SYS_INIT_SP_ADDR		(256 * 1024 + 16 * 1024)
+#define CONFIG_SYS_CAR_ADDR			0x19200000
+#define CONFIG_SYS_CAR_SIZE			(16 * 1024)
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_MONITOR_LEN			(256 * 1024)
 #define CONFIG_SYS_MALLOC_LEN			(0x20000 + 128 * 1024)
-/* Address of temporary Global Data */
-#define CONFIG_SYS_INIT_GD_ADDR		(256 * 1024)
 
 
 /* allow to overwrite serial and ethaddr */

include/configs/eNET.h

@@ -168,16 +168,10 @@
 #define CONFIG_SYS_STACK_SIZE			(32 * 1024)
 #define CONFIG_SYS_CAR_ADDR			0x19200000
 #define CONFIG_SYS_CAR_SIZE			(16 * 1024)
-#define CONFIG_SYS_INIT_SP_ADDR			(CONFIG_SYS_CAR_ADDR + \
-						 CONFIG_SYS_CAR_SIZE)
 #define CONFIG_SYS_MONITOR_BASE			CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_MONITOR_LEN			(256 * 1024)
 #define CONFIG_SYS_MALLOC_LEN			(CONFIG_ENV_SECT_SIZE + \
 						 128*1024)
-/* Address of temporary Global Data */
-#define CONFIG_SYS_INIT_GD_ADDR			CONFIG_SYS_CAR_ADDR
-
-
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE