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Diffstat (limited to 'cpu/at91rm9200')
-rw-r--r--cpu/at91rm9200/cpu.c18
-rw-r--r--cpu/at91rm9200/start.S22
2 files changed, 18 insertions, 22 deletions
diff --git a/cpu/at91rm9200/cpu.c b/cpu/at91rm9200/cpu.c
index 262ca34..b0cfcef 100644
--- a/cpu/at91rm9200/cpu.c
+++ b/cpu/at91rm9200/cpu.c
@@ -81,18 +81,16 @@ static void cp_delay(void)
int cpu_init(void)
{
- /*
- * setup up stack if necessary
- */
+ /*
+ * setup up stacks if necessary
+ */
#ifdef CONFIG_USE_IRQ
- IRQ_STACK_START = _armboot_end +
- CONFIG_STACKSIZE + CONFIG_STACKSIZE_IRQ - 4;
- FIQ_STACK_START = IRQ_STACK_START + CONFIG_STACKSIZE_FIQ;
- _armboot_real_end = FIQ_STACK_START + 4;
-#else
- _armboot_real_end = _armboot_end + CONFIG_STACKSIZE;
+ DECLARE_GLOBAL_DATA_PTR;
+
+ IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_LEN - 4;
+ FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
#endif
- return 0;
+ return 0;
}
int cleanup_before_linux(void)
diff --git a/cpu/at91rm9200/start.S b/cpu/at91rm9200/start.S
index 9fa1461..a93d045 100644
--- a/cpu/at91rm9200/start.S
+++ b/cpu/at91rm9200/start.S
@@ -93,14 +93,6 @@ _armboot_end_data:
_armboot_end:
.word armboot_end
-/*
- * _armboot_real_end is the first usable RAM address behind armboot
- * and the various stacks
- */
-.globl _armboot_real_end
-_armboot_real_end:
- .word 0x0badc0de
-
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.globl IRQ_STACK_START
@@ -147,10 +139,16 @@ copyex:
bl cpu_init_crit
#endif
- /* set up the stack */
- ldr r0, _armboot_end
- add r0, r0, #CONFIG_STACKSIZE
- sub sp, r0, #12 /* leave 3 words for abort-stack */
+ /* Set up the stack */
+stack_setup:
+ ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
+ sub r0, r0, #CFG_MALLOC_LEN /* malloc area */
+ sub r0, r0, #CFG_GBL_DATA_SIZE /* bdinfo */
+#ifdef CONFIG_USE_IRQ
+ sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
+#endif
+ sub sp, r0, #12 /* leave 3 words for abort-stack */
+
ldr pc,_start_armboot
_start_armboot: .word start_armboot