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-rw-r--r--arch/x86/lib/Makefile12
-rw-r--r--arch/x86/lib/board.c15
-rw-r--r--arch/x86/lib/init_helpers.c83
-rw-r--r--arch/x86/lib/init_wrappers.c28
-rw-r--r--arch/x86/lib/pcat_timer.c2
-rw-r--r--arch/x86/lib/physmem.c228
-rw-r--r--arch/x86/lib/relocate.c4
-rw-r--r--arch/x86/lib/timer.c17
-rw-r--r--arch/x86/lib/video.c2
-rw-r--r--arch/x86/lib/zimage.c27
10 files changed, 362 insertions, 56 deletions
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 51836da..0a52cc8 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -25,11 +25,16 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(ARCH).o
+ifeq ($(CONFIG_X86_NO_REAL_MODE),)
SOBJS-$(CONFIG_SYS_PC_BIOS) += bios.o
SOBJS-$(CONFIG_SYS_PCI_BIOS) += bios_pci.o
-SOBJS-$(CONFIG_SYS_X86_REALMODE) += realmode_switch.o
+COBJS-y += realmode.o
+SOBJS-y += realmode_switch.o
COBJS-$(CONFIG_SYS_PC_BIOS) += bios_setup.o
+COBJS-$(CONFIG_VIDEO_VGA) += video_bios.o
+endif
+
COBJS-y += board.o
COBJS-y += bootm.o
COBJS-y += cmd_boot.o
@@ -41,12 +46,11 @@ COBJS-$(CONFIG_SYS_PCAT_INTERRUPTS) += pcat_interrupts.o
COBJS-$(CONFIG_SYS_GENERIC_TIMER) += pcat_timer.o
COBJS-$(CONFIG_PCI) += pci.o
COBJS-$(CONFIG_PCI) += pci_type1.o
-COBJS-$(CONFIG_SYS_X86_REALMODE) += realmode.o
COBJS-y += relocate.o
+COBJS-y += physmem.o
COBJS-y += string.o
COBJS-$(CONFIG_SYS_X86_ISR_TIMER) += timer.o
-COBJS-$(CONFIG_VIDEO) += video_bios.o
-COBJS-$(CONFIG_VIDEO) += video.o
+COBJS-$(CONFIG_VIDEO_VGA) += video.o
COBJS-$(CONFIG_CMD_ZBOOT) += zimage.o
SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
diff --git a/arch/x86/lib/board.c b/arch/x86/lib/board.c
index e5caf13..22bc26d 100644
--- a/arch/x86/lib/board.c
+++ b/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>
@@ -98,10 +99,17 @@ typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence_f[] = {
cpu_init_f,
board_early_init_f,
+#ifdef CONFIG_OF_CONTROL
+ find_fdt,
+ fdtdec_check_fdt,
+#endif
env_init,
init_baudrate_f,
serial_init,
console_init_f,
+#ifdef CONFIG_OF_CONTROL
+ prepare_fdt,
+#endif
dram_init_f,
calculate_relocation_address,
@@ -121,7 +129,6 @@ 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,
@@ -154,6 +161,9 @@ init_fnc_t *init_sequence_r[] = {
#ifndef CONFIG_SYS_NO_FLASH
flash_init_r,
#endif
+#ifdef CONFIG_SPI
+ init_func_spi;
+#endif
env_relocate_r,
#ifdef CONFIG_PCI
pci_init_r,
@@ -164,9 +174,6 @@ 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
diff --git a/arch/x86/lib/init_helpers.c b/arch/x86/lib/init_helpers.c
index 9ec34ff..3eec9a6 100644
--- a/arch/x86/lib/init_helpers.c
+++ b/arch/x86/lib/init_helpers.c
@@ -28,9 +28,11 @@
#include <net.h>
#include <ide.h>
#include <serial.h>
+#include <spi.h>
#include <status_led.h>
#include <asm/processor.h>
#include <asm/u-boot-x86.h>
+#include <linux/compiler.h>
#include <asm/init_helpers.h>
@@ -71,7 +73,7 @@ int init_baudrate_f(void)
return 0;
}
-int calculate_relocation_address(void)
+__weak int calculate_relocation_address(void)
{
ulong text_start = (ulong)&__text_start;
ulong bss_end = (ulong)&__bss_end;
@@ -83,51 +85,17 @@ 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 */
- dest_addr -= CONFIG_SYS_STACK_SIZE;
+ /* U-Boot is at the top */
dest_addr -= (bss_end - text_start);
dest_addr &= ~15;
gd->relocaddr = dest_addr;
gd->reloc_off = (dest_addr - text_start);
- 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);
+ /* Stack is at the bottom, so it can grow down */
+ gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN;
return 0;
}
@@ -195,3 +163,40 @@ int set_load_addr_r(void)
return 0;
}
+
+int init_func_spi(void)
+{
+ puts("SPI: ");
+ spi_init();
+ puts("ready\n");
+ return 0;
+}
+
+#ifdef CONFIG_OF_CONTROL
+int find_fdt(void)
+{
+#ifdef CONFIG_OF_EMBED
+ /* Get a pointer to the FDT */
+ gd->fdt_blob = _binary_dt_dtb_start;
+#elif defined CONFIG_OF_SEPARATE
+ /* FDT is at end of image */
+ gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
+#endif
+ /* Allow the early environment to override the fdt address */
+ gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
+ (uintptr_t)gd->fdt_blob);
+
+ return 0;
+}
+
+int prepare_fdt(void)
+{
+ /* For now, put this check after the console is ready */
+ if (fdtdec_prepare_fdt()) {
+ panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
+ "doc/README.fdt-control");
+ }
+
+ return 0;
+}
+#endif
diff --git a/arch/x86/lib/init_wrappers.c b/arch/x86/lib/init_wrappers.c
index 71449fe..cca018f 100644
--- a/arch/x86/lib/init_wrappers.c
+++ b/arch/x86/lib/init_wrappers.c
@@ -21,6 +21,7 @@
* MA 02111-1307 USA
*/
#include <common.h>
+#include <environment.h>
#include <serial.h>
#include <kgdb.h>
#include <scsi.h>
@@ -36,10 +37,35 @@ int serial_initialize_r(void)
return 0;
}
+/*
+ * Tell if it's OK to load the environment early in boot.
+ *
+ * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
+ * if this is OK (defaulting to saying it's not OK).
+ *
+ * NOTE: Loading the environment early can be a bad idea if security is
+ * important, since no verification is done on the environment.
+ *
+ * @return 0 if environment should not be loaded, !=0 if it is ok to load
+ */
+static int should_load_env(void)
+{
+#ifdef CONFIG_OF_CONTROL
+ return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 0);
+#elif defined CONFIG_DELAY_ENVIRONMENT
+ return 0;
+#else
+ return 1;
+#endif
+}
+
int env_relocate_r(void)
{
/* initialize environment */
- env_relocate();
+ if (should_load_env())
+ env_relocate();
+ else
+ set_default_env(NULL);
return 0;
}
diff --git a/arch/x86/lib/pcat_timer.c b/arch/x86/lib/pcat_timer.c
index 6b3db69..b0b6637 100644
--- a/arch/x86/lib/pcat_timer.c
+++ b/arch/x86/lib/pcat_timer.c
@@ -39,7 +39,7 @@ int timer_init(void)
* Timer 0 is used to increment system_tick 1000 times/sec
* Timer 1 was used for DRAM refresh in early PC's
* Timer 2 is used to drive the speaker
- * (to stasrt a beep: write 3 to port 0x61,
+ * (to start a beep: write 3 to port 0x61,
* to stop it again: write 0)
*/
outb(PIT_CMD_CTR0 | PIT_CMD_BOTH | PIT_CMD_MODE2,
diff --git a/arch/x86/lib/physmem.c b/arch/x86/lib/physmem.c
new file mode 100644
index 0000000..18f0e62
--- /dev/null
+++ b/arch/x86/lib/physmem.c
@@ -0,0 +1,228 @@
+/*
+ * Copyright (c) 2012 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.
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <physmem.h>
+#include <linux/compiler.h>
+
+/* Large pages are 2MB. */
+#define LARGE_PAGE_SIZE ((1 << 20) * 2)
+
+/*
+ * Paging data structures.
+ */
+
+struct pdpe {
+ uint64_t p:1;
+ uint64_t mbz_0:2;
+ uint64_t pwt:1;
+ uint64_t pcd:1;
+ uint64_t mbz_1:4;
+ uint64_t avl:3;
+ uint64_t base:40;
+ uint64_t mbz_2:12;
+};
+
+typedef struct pdpe pdpt_t[512];
+
+struct pde {
+ uint64_t p:1; /* present */
+ uint64_t rw:1; /* read/write */
+ uint64_t us:1; /* user/supervisor */
+ uint64_t pwt:1; /* page-level writethrough */
+ uint64_t pcd:1; /* page-level cache disable */
+ uint64_t a:1; /* accessed */
+ uint64_t d:1; /* dirty */
+ uint64_t ps:1; /* page size */
+ uint64_t g:1; /* global page */
+ uint64_t avl:3; /* available to software */
+ uint64_t pat:1; /* page-attribute table */
+ uint64_t mbz_0:8; /* must be zero */
+ uint64_t base:31; /* base address */
+};
+
+typedef struct pde pdt_t[512];
+
+static pdpt_t pdpt __aligned(4096);
+static pdt_t pdts[4] __aligned(4096);
+
+/*
+ * Map a virtual address to a physical address and optionally invalidate any
+ * old mapping.
+ *
+ * @param virt The virtual address to use.
+ * @param phys The physical address to use.
+ * @param invlpg Whether to use invlpg to clear any old mappings.
+ */
+static void x86_phys_map_page(uintptr_t virt, phys_addr_t phys, int invlpg)
+{
+ /* Extract the two bit PDPT index and the 9 bit PDT index. */
+ uintptr_t pdpt_idx = (virt >> 30) & 0x3;
+ uintptr_t pdt_idx = (virt >> 21) & 0x1ff;
+
+ /* Set up a handy pointer to the appropriate PDE. */
+ struct pde *pde = &(pdts[pdpt_idx][pdt_idx]);
+
+ memset(pde, 0, sizeof(struct pde));
+ pde->p = 1;
+ pde->rw = 1;
+ pde->us = 1;
+ pde->ps = 1;
+ pde->base = phys >> 21;
+
+ if (invlpg) {
+ /* Flush any stale mapping out of the TLBs. */
+ __asm__ __volatile__(
+ "invlpg %0\n\t"
+ :
+ : "m" (*(uint8_t *)virt)
+ );
+ }
+}
+
+/* Identity map the lower 4GB and turn on paging with PAE. */
+static void x86_phys_enter_paging(void)
+{
+ phys_addr_t page_addr;
+ unsigned i;
+
+ /* Zero out the page tables. */
+ memset(pdpt, 0, sizeof(pdpt));
+ memset(pdts, 0, sizeof(pdts));
+
+ /* Set up the PDPT. */
+ for (i = 0; i < ARRAY_SIZE(pdts); i++) {
+ pdpt[i].p = 1;
+ pdpt[i].base = ((uintptr_t)&pdts[i]) >> 12;
+ }
+
+ /* Identity map everything up to 4GB. */
+ for (page_addr = 0; page_addr < (1ULL << 32);
+ page_addr += LARGE_PAGE_SIZE) {
+ /* There's no reason to invalidate the TLB with paging off. */
+ x86_phys_map_page(page_addr, page_addr, 0);
+ }
+
+ /* Turn on paging */
+ __asm__ __volatile__(
+ /* Load the page table address */
+ "movl %0, %%cr3\n\t"
+ /* Enable pae */
+ "movl %%cr4, %%eax\n\t"
+ "orl $0x00000020, %%eax\n\t"
+ "movl %%eax, %%cr4\n\t"
+ /* Enable paging */
+ "movl %%cr0, %%eax\n\t"
+ "orl $0x80000000, %%eax\n\t"
+ "movl %%eax, %%cr0\n\t"
+ :
+ : "r" (pdpt)
+ : "eax"
+ );
+}
+
+/* Disable paging and PAE mode. */
+static void x86_phys_exit_paging(void)
+{
+ /* Turn off paging */
+ __asm__ __volatile__ (
+ /* Disable paging */
+ "movl %%cr0, %%eax\n\t"
+ "andl $0x7fffffff, %%eax\n\t"
+ "movl %%eax, %%cr0\n\t"
+ /* Disable pae */
+ "movl %%cr4, %%eax\n\t"
+ "andl $0xffffffdf, %%eax\n\t"
+ "movl %%eax, %%cr4\n\t"
+ :
+ :
+ : "eax"
+ );
+}
+
+/*
+ * Set physical memory to a particular value when the whole region fits on one
+ * page.
+ *
+ * @param map_addr The address that starts the physical page.
+ * @param offset How far into that page to start setting a value.
+ * @param c The value to set memory to.
+ * @param size The size in bytes of the area to set.
+ */
+static void x86_phys_memset_page(phys_addr_t map_addr, uintptr_t offset, int c,
+ unsigned size)
+{
+ /*
+ * U-Boot should be far away from the beginning of memory, so that's a
+ * good place to map our window on top of.
+ */
+ const uintptr_t window = LARGE_PAGE_SIZE;
+
+ /* Make sure the window is below U-Boot. */
+ assert(window + LARGE_PAGE_SIZE <
+ gd->relocaddr - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_STACK_SIZE);
+ /* Map the page into the window and then memset the appropriate part. */
+ x86_phys_map_page(window, map_addr, 1);
+ memset((void *)(window + offset), c, size);
+}
+
+/*
+ * A physical memory anologue to memset with matching parameters and return
+ * value.
+ */
+phys_addr_t arch_phys_memset(phys_addr_t start, int c, phys_size_t size)
+{
+ const phys_addr_t max_addr = (phys_addr_t)~(uintptr_t)0;
+ const phys_addr_t orig_start = start;
+
+ if (!size)
+ return orig_start;
+
+ /* Handle memory below 4GB. */
+ if (start <= max_addr) {
+ phys_size_t low_size = MIN(max_addr + 1 - start, size);
+ void *start_ptr = (void *)(uintptr_t)start;
+
+ assert(((phys_addr_t)(uintptr_t)start) == start);
+ memset(start_ptr, c, low_size);
+ start += low_size;
+ size -= low_size;
+ }
+
+ /* Use paging and PAE to handle memory above 4GB up to 64GB. */
+ if (size) {
+ phys_addr_t map_addr = start & ~(LARGE_PAGE_SIZE - 1);
+ phys_addr_t offset = start - map_addr;
+
+ x86_phys_enter_paging();
+
+ /* Handle the first partial page. */
+ if (offset) {
+ phys_addr_t end =
+ MIN(map_addr + LARGE_PAGE_SIZE, start + size);
+ phys_size_t cur_size = end - start;
+ x86_phys_memset_page(map_addr, offset, c, cur_size);
+ size -= cur_size;
+ map_addr += LARGE_PAGE_SIZE;
+ }
+ /* Handle the complete pages. */
+ while (size > LARGE_PAGE_SIZE) {
+ x86_phys_memset_page(map_addr, 0, c, LARGE_PAGE_SIZE);
+ size -= LARGE_PAGE_SIZE;
+ map_addr += LARGE_PAGE_SIZE;
+ }
+ /* Handle the last partial page. */
+ if (size)
+ x86_phys_memset_page(map_addr, 0, c, size);
+
+ x86_phys_exit_paging();
+ }
+ return orig_start;
+}
diff --git a/arch/x86/lib/relocate.c b/arch/x86/lib/relocate.c
index 200baab..23edca9 100644
--- a/arch/x86/lib/relocate.c
+++ b/arch/x86/lib/relocate.c
@@ -80,12 +80,12 @@ int do_elf_reloc_fixups(void)
/* Check that the target points into .text */
if (*offset_ptr_ram >= CONFIG_SYS_TEXT_BASE &&
- *offset_ptr_ram <
+ *offset_ptr_ram <=
(CONFIG_SYS_TEXT_BASE + size)) {
*offset_ptr_ram += gd->reloc_off;
}
}
- } while (re_src++ < re_end);
+ } while (++re_src < re_end);
return 0;
}
diff --git a/arch/x86/lib/timer.c b/arch/x86/lib/timer.c
index fd7032e..a13424b 100644
--- a/arch/x86/lib/timer.c
+++ b/arch/x86/lib/timer.c
@@ -37,6 +37,7 @@ struct timer_isr_function {
static struct timer_isr_function *first_timer_isr;
static unsigned long system_ticks;
+static uint64_t base_value;
/*
* register_timer_isr() allows multiple architecture and board specific
@@ -98,3 +99,19 @@ ulong get_timer(ulong base)
{
return system_ticks - base;
}
+
+void timer_set_tsc_base(uint64_t new_base)
+{
+ base_value = new_base;
+}
+
+uint64_t timer_get_tsc(void)
+{
+ uint64_t time_now;
+
+ time_now = rdtsc();
+ if (!base_value)
+ base_value = time_now;
+
+ return time_now - base_value;
+}
diff --git a/arch/x86/lib/video.c b/arch/x86/lib/video.c
index 3d6b24d..20e2416 100644
--- a/arch/x86/lib/video.c
+++ b/arch/x86/lib/video.c
@@ -222,8 +222,10 @@ int video_init(void)
int drv_video_init(void)
{
+#ifndef CONFIG_X86_NO_REAL_MODE
if (video_bios_init())
return 1;
+#endif
return video_init();
}
diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index 2214286..46af391 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -36,6 +36,10 @@
#include <asm/realmode.h>
#include <asm/byteorder.h>
#include <asm/bootparam.h>
+#ifdef CONFIG_SYS_COREBOOT
+#include <asm/arch/timestamp.h>
+#endif
+#include <linux/compiler.h>
/*
* Memory lay-out:
@@ -171,7 +175,7 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size,
else
*load_address = (void *)ZIMAGE_LOAD_ADDR;
-#if defined CONFIG_ZBOOT_32
+#if (defined CONFIG_ZBOOT_32 || defined CONFIG_X86_NO_REAL_MODE)
printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base);
memset(setup_base, 0, sizeof(*setup_base));
setup_base->hdr = params->hdr;
@@ -237,7 +241,7 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
struct setup_header *hdr = &setup_base->hdr;
int bootproto = get_boot_protocol(hdr);
-#if defined CONFIG_ZBOOT_32
+#if (defined CONFIG_ZBOOT_32 || defined CONFIG_X86_NO_REAL_MODE)
setup_base->e820_entries = install_e820_map(
ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
#endif
@@ -279,10 +283,23 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
return 0;
}
+/*
+ * Implement a weak default function for boards that optionally
+ * need to clean up the system before jumping to the kernel.
+ */
+__weak void board_final_cleanup(void)
+{
+}
+
void boot_zimage(void *setup_base, void *load_address)
{
+ board_final_cleanup();
+
printf("\nStarting kernel ...\n\n");
+#ifdef CONFIG_SYS_COREBOOT
+ timestamp_add_now(TS_U_BOOT_START_KERNEL);
+#endif
#if defined CONFIG_ZBOOT_32
/*
* Set %ebx, %ebp, and %edi to 0, %esi to point to the boot_params
@@ -292,9 +309,9 @@ void boot_zimage(void *setup_base, void *load_address)
* itself in arch/i386/cpu/cpu.c.
*/
__asm__ __volatile__ (
- "movl $0, %%ebp \n"
- "cli \n"
- "jmp %[kernel_entry] \n"
+ "movl $0, %%ebp\n"
+ "cli\n"
+ "jmp *%[kernel_entry]\n"
:: [kernel_entry]"a"(load_address),
[boot_params] "S"(setup_base),
"b"(0), "D"(0)