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Diffstat (limited to 'arch/x86/lib/init_helpers.c')
-rw-r--r--arch/x86/lib/init_helpers.c50
1 files changed, 39 insertions, 11 deletions
diff --git a/arch/x86/lib/init_helpers.c b/arch/x86/lib/init_helpers.c
index 3eec9a61d6..af9dbc146a 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>
@@ -31,6 +32,7 @@
#include <spi.h>
#include <status_led.h>
#include <asm/processor.h>
+#include <asm/sections.h>
#include <asm/u-boot-x86.h>
#include <linux/compiler.h>
@@ -73,26 +75,52 @@ 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->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 +208,7 @@ 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,