This helps to understand and find problems with the memory layout of
barebox. It adds another entry for the board data that barebox
allocated.
Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
---
arch/arm/cpu/start.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
index e06c4c8f37a0..4ad64b61e86a 100644
--- a/arch/arm/cpu/start.c
+++ b/arch/arm/cpu/start.c
@@ -34,6 +34,8 @@
#include "mmu-early.h"
unsigned long arm_stack_top;
+static unsigned long arm_head_bottom;
+static unsigned long arm_barebox_size;
static void *barebox_boarddata;
static bool blob_is_fdt(const void *blob)
@@ -116,6 +118,18 @@ static inline unsigned long arm_mem_boarddata(unsigned long membase,
return mem;
}
+static int barebox_memory_areas_init(void)
+{
+ unsigned long start = arm_head_bottom;
+ unsigned long size = arm_mem_barebox_image(0, arm_stack_top,
+ arm_barebox_size) -
+ arm_head_bottom;
+ request_sdram_region("board data", start, size);
+
+ return 0;
+}
+device_initcall(barebox_memory_areas_init);
+
__noreturn void barebox_non_pbl_start(unsigned long membase,
unsigned long memsize, void *boarddata)
{
@@ -123,7 +137,6 @@ __noreturn void barebox_non_pbl_start(unsigned long membase,
unsigned long malloc_start, malloc_end;
unsigned long barebox_size = barebox_image_size +
((unsigned long)&__bss_stop - (unsigned long)&__bss_start);
- unsigned long arm_head_bottom;
if (IS_ENABLED(CONFIG_RELOCATABLE)) {
unsigned long barebox_base = arm_mem_barebox_image(membase,
@@ -139,6 +152,9 @@ __noreturn void barebox_non_pbl_start(unsigned long membase,
pr_debug("memory at 0x%08lx, size 0x%08lx\n", membase, memsize);
arm_stack_top = endmem;
+ arm_barebox_size = barebox_size;
+ arm_head_bottom = arm_mem_barebox_image(membase, endmem,
+ arm_barebox_size);
if (IS_ENABLED(CONFIG_MMU_EARLY)) {
unsigned long ttb = arm_mem_ttb(membase, endmem);
@@ -175,6 +191,7 @@ __noreturn void barebox_non_pbl_start(unsigned long membase,
name, mem);
barebox_boarddata = memcpy((void *)mem, boarddata,
totalsize);
+ arm_head_bottom = mem;
}
}
--
2.6.2
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
