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-rw-r--r--arch/x86/lib/board.c3
-rw-r--r--arch/x86/lib/init_helpers.c49
-rw-r--r--arch/x86/lib/init_wrappers.c1
-rw-r--r--arch/x86/lib/relocate.c37
-rw-r--r--arch/x86/lib/timer.c9
5 files changed, 81 insertions, 18 deletions
diff --git a/arch/x86/lib/board.c b/arch/x86/lib/board.c
index 22bc26dde..2441a66ae 100644
--- a/arch/x86/lib/board.c
+++ b/arch/x86/lib/board.c
@@ -32,6 +32,7 @@
*/
#include <common.h>
+#include <fdtdec.h>
#include <watchdog.h>
#include <stdio_dev.h>
#include <asm/u-boot-x86.h>
@@ -131,6 +132,7 @@ init_fnc_t *init_sequence_f[] = {
init_fnc_t *init_sequence_f_r[] = {
init_cache_f_r,
copy_uboot_to_ram,
+ copy_fdt_to_ram,
clear_bss,
do_elf_reloc_fixups,
@@ -217,6 +219,7 @@ static void do_init_loop(init_fnc_t **init_fnc_ptr)
void board_init_f(ulong boot_flags)
{
+ gd->fdt_blob = gd->arch.new_fdt = NULL;
gd->flags = boot_flags;
do_init_loop(init_sequence_f);
diff --git a/arch/x86/lib/init_helpers.c b/arch/x86/lib/init_helpers.c
index 3eec9a61d..414fdcc4c 100644
--- a/arch/x86/lib/init_helpers.c
+++ b/arch/x86/lib/init_helpers.c
@@ -22,6 +22,7 @@
*/
#include <common.h>
#include <command.h>
+#include <fdtdec.h>
#include <stdio_dev.h>
#include <version.h>
#include <malloc.h>
@@ -73,26 +74,52 @@ int init_baudrate_f(void)
return 0;
}
-__weak int calculate_relocation_address(void)
+/* Get the top of usable RAM */
+__weak ulong board_get_usable_ram_top(ulong total_size)
{
- ulong text_start = (ulong)&__text_start;
- ulong bss_end = (ulong)&__bss_end;
+ return gd->ram_size;
+}
+
+int calculate_relocation_address(void)
+{
+ const ulong uboot_size = (uintptr_t)&__bss_end -
+ (uintptr_t)&__text_start;
+ ulong total_size;
ulong dest_addr;
+ ulong fdt_size = 0;
+#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
+ if (gd->fdt_blob)
+ fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
+#endif
+ total_size = ALIGN(uboot_size, 1 << 12) + CONFIG_SYS_MALLOC_LEN +
+ CONFIG_SYS_STACK_SIZE + fdt_size;
+
+ dest_addr = board_get_usable_ram_top(total_size);
/*
* NOTE: All destination address are rounded down to 16-byte
* boundary to satisfy various worst-case alignment
* requirements
*/
-
- /* Stack is at top of available memory */
- dest_addr = gd->ram_size;
-
- /* U-Boot is at the top */
- dest_addr -= (bss_end - text_start);
dest_addr &= ~15;
+
+#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
+ /*
+ * If the device tree is sitting immediate above our image then we
+ * must relocate it. If it is embedded in the data section, then it
+ * will be relocated with other data.
+ */
+ if (gd->fdt_blob) {
+ dest_addr -= fdt_size;
+ gd->arch.new_fdt = (void *)dest_addr;
+ dest_addr &= ~15;
+ }
+#endif
+ /* U-Boot is below the FDT */
+ dest_addr -= uboot_size;
+ dest_addr &= ~((1 << 12) - 1);
gd->relocaddr = dest_addr;
- gd->reloc_off = (dest_addr - text_start);
+ gd->reloc_off = dest_addr - (uintptr_t)&__text_start;
/* Stack is at the bottom, so it can grow down */
gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN;
@@ -180,7 +207,7 @@ int find_fdt(void)
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);
+ gd->fdt_blob = (ulong *)&_end;
#endif
/* Allow the early environment to override the fdt address */
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
diff --git a/arch/x86/lib/init_wrappers.c b/arch/x86/lib/init_wrappers.c
index cca018fa9..19af875c0 100644
--- a/arch/x86/lib/init_wrappers.c
+++ b/arch/x86/lib/init_wrappers.c
@@ -22,6 +22,7 @@
*/
#include <common.h>
#include <environment.h>
+#include <fdtdec.h>
#include <serial.h>
#include <kgdb.h>
#include <scsi.h>
diff --git a/arch/x86/lib/relocate.c b/arch/x86/lib/relocate.c
index 23edca952..3e370f290 100644
--- a/arch/x86/lib/relocate.c
+++ b/arch/x86/lib/relocate.c
@@ -32,6 +32,7 @@
*/
#include <common.h>
+#include <libfdt.h>
#include <malloc.h>
#include <asm/u-boot-x86.h>
#include <asm/relocate.h>
@@ -46,6 +47,22 @@ int copy_uboot_to_ram(void)
return 0;
}
+int copy_fdt_to_ram(void)
+{
+ if (gd->arch.new_fdt) {
+ ulong fdt_size;
+
+ fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
+
+ memcpy(gd->arch.new_fdt, gd->fdt_blob, fdt_size);
+ debug("Relocated fdt from %p to %p, size %lx\n",
+ gd->fdt_blob, gd->arch.new_fdt, fdt_size);
+ gd->fdt_blob = gd->arch.new_fdt;
+ }
+
+ return 0;
+}
+
int clear_bss(void)
{
ulong dst_addr = (ulong)&__bss_start + gd->reloc_off;
@@ -56,12 +73,16 @@ int clear_bss(void)
return 0;
}
+/*
+ * This function has more error checking than you might expect. Please see
+ * the commit message for more informaiton.
+ */
int do_elf_reloc_fixups(void)
{
Elf32_Rel *re_src = (Elf32_Rel *)(&__rel_dyn_start);
Elf32_Rel *re_end = (Elf32_Rel *)(&__rel_dyn_end);
- Elf32_Addr *offset_ptr_rom;
+ Elf32_Addr *offset_ptr_rom, *last_offset = NULL;
Elf32_Addr *offset_ptr_ram;
/* The size of the region of u-boot that runs out of RAM. */
@@ -72,7 +93,8 @@ int do_elf_reloc_fixups(void)
offset_ptr_rom = (Elf32_Addr *)re_src->r_offset;
/* Check that the location of the relocation is in .text */
- if (offset_ptr_rom >= (Elf32_Addr *)CONFIG_SYS_TEXT_BASE) {
+ if (offset_ptr_rom >= (Elf32_Addr *)CONFIG_SYS_TEXT_BASE &&
+ offset_ptr_rom > last_offset) {
/* Switch to the in-RAM version */
offset_ptr_ram = (Elf32_Addr *)((ulong)offset_ptr_rom +
@@ -83,8 +105,19 @@ int do_elf_reloc_fixups(void)
*offset_ptr_ram <=
(CONFIG_SYS_TEXT_BASE + size)) {
*offset_ptr_ram += gd->reloc_off;
+ } else {
+ debug(" %p: rom reloc %x, ram %p, value %x,"
+ " limit %lx\n", re_src,
+ re_src->r_offset, offset_ptr_ram,
+ *offset_ptr_ram,
+ CONFIG_SYS_TEXT_BASE + size);
}
+ } else {
+ debug(" %p: rom reloc %x, last %p\n", re_src,
+ re_src->r_offset, last_offset);
}
+ last_offset = offset_ptr_rom;
+
} while (++re_src < re_end);
return 0;
diff --git a/arch/x86/lib/timer.c b/arch/x86/lib/timer.c
index a13424b3e..1f8ce609e 100644
--- a/arch/x86/lib/timer.c
+++ b/arch/x86/lib/timer.c
@@ -37,7 +37,6 @@ 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
@@ -102,7 +101,7 @@ ulong get_timer(ulong base)
void timer_set_tsc_base(uint64_t new_base)
{
- base_value = new_base;
+ gd->arch.tsc_base = new_base;
}
uint64_t timer_get_tsc(void)
@@ -110,8 +109,8 @@ uint64_t timer_get_tsc(void)
uint64_t time_now;
time_now = rdtsc();
- if (!base_value)
- base_value = time_now;
+ if (!gd->arch.tsc_base)
+ gd->arch.tsc_base = time_now;
- return time_now - base_value;
+ return time_now - gd->arch.tsc_base;
}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 20:38:50 +0000