Fix board init code to respect the C runtime environment
board_init_f_mem() alters the C runtime environment's
stack it is actually already using. This is not a valid
behaviour within a C runtime environment.
Split board_init_f_mem into C functions which do not alter
their own stack and always behave properly with respect to
their C runtime environment.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Thomas Chou <thomas@wytron.com.tw>
diff --git a/arch/arc/lib/start.S b/arch/arc/lib/start.S
index 26a5934..90ee7e0 100644
--- a/arch/arc/lib/start.S
+++ b/arch/arc/lib/start.S
@@ -50,18 +50,20 @@
1:
#endif
- /* Setup stack- and frame-pointers */
+ /* Establish C runtime stack and frame */
mov %sp, CONFIG_SYS_INIT_SP_ADDR
mov %fp, %sp
- /* Allocate and zero GD, update SP */
+ /* Allocate reserved area from current top of stack */
mov %r0, %sp
- bl board_init_f_mem
-
- /* Update stack- and frame-pointers */
+ bl board_init_f_alloc_reserve
+ /* Set stack below reserved area, adjust frame pointer accordingly */
mov %sp, %r0
mov %fp, %sp
+ /* Initialize reserved area - note: r0 already contains address */
+ bl board_init_f_init_reserve
+
/* Zero the one and only argument of "board_init_f" */
mov_s %r0, 0
j board_init_f
diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S
index 80548eb..4f2a712 100644
--- a/arch/arm/lib/crt0.S
+++ b/arch/arm/lib/crt0.S
@@ -83,8 +83,9 @@
bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
#endif
mov r0, sp
- bl board_init_f_mem
+ bl board_init_f_alloc_reserve
mov sp, r0
+ bl board_init_f_init_reserve
mov r0, #0
bl board_init_f
diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S
index cef1c71..b4fc760 100644
--- a/arch/arm/lib/crt0_64.S
+++ b/arch/arm/lib/crt0_64.S
@@ -75,8 +75,10 @@
ldr x0, =(CONFIG_SYS_INIT_SP_ADDR)
#endif
bic sp, x0, #0xf /* 16-byte alignment for ABI compliance */
- bl board_init_f_mem
+ mov x0, sp
+ bl board_init_f_alloc_reserve
mov sp, x0
+ bl board_init_f_init_reserve
mov x0, #0
bl board_init_f
diff --git a/arch/microblaze/cpu/start.S b/arch/microblaze/cpu/start.S
index 14f46a8..206be3e 100644
--- a/arch/microblaze/cpu/start.S
+++ b/arch/microblaze/cpu/start.S
@@ -25,7 +25,7 @@
addi r8, r0, __end
mts rslr, r8
- /* TODO: Redo this code to call board_init_f_mem() */
+ /* TODO: Redo this code to call board_init_f_*() */
#if defined(CONFIG_SPL_BUILD)
addi r1, r0, CONFIG_SPL_STACK_ADDR
mts rshr, r1
@@ -142,7 +142,7 @@
ori r12, r12, 0x1a0
mts rmsr, r12
- /* TODO: Redo this code to call board_init_f_mem() */
+ /* TODO: Redo this code to call board_init_f_*() */
clear_bss:
/* clear BSS segments */
addi r5, r0, __bss_start
diff --git a/arch/nios2/cpu/start.S b/arch/nios2/cpu/start.S
index 54787c5..204d0cd 100644
--- a/arch/nios2/cpu/start.S
+++ b/arch/nios2/cpu/start.S
@@ -106,14 +106,18 @@
stw r0, 4(sp)
mov fp, sp
- /* Allocate and zero GD, update SP */
+ /* Allocate and initialize reserved area, update SP */
mov r4, sp
- movhi r2, %hi(board_init_f_mem@h)
- ori r2, r2, %lo(board_init_f_mem@h)
+ movhi r2, %hi(board_init_f_alloc_reserve@h)
+ ori r2, r2, %lo(board_init_f_alloc_reserve@h)
+ callr r2
+ mov sp, r2
+ mov r4, sp
+ movhi r2, %hi(board_init_f_init_reserve@h)
+ ori r2, r2, %lo(board_init_f_init_reserve@h)
callr r2
- /* Update stack- and frame-pointers */
- mov sp, r2
+ /* Update frame-pointer */
mov fp, sp
/* Call board_init_f -- never returns */
diff --git a/arch/powerpc/cpu/ppc4xx/start.S b/arch/powerpc/cpu/ppc4xx/start.S
index 3dd0557..137afce 100644
--- a/arch/powerpc/cpu/ppc4xx/start.S
+++ b/arch/powerpc/cpu/ppc4xx/start.S
@@ -762,8 +762,9 @@
bl cpu_init_f /* run low-level CPU init code (from Flash) */
#ifdef CONFIG_SYS_GENERIC_BOARD
mr r3, r1
- bl board_init_f_mem
+ bl board_init_f_alloc_reserve
mr r1, r3
+ bl board_init_f_init_reserve
li r0,0
stwu r0, -4(r1)
stwu r0, -4(r1)
@@ -1038,8 +1039,9 @@
bl cpu_init_f /* run low-level CPU init code (from Flash) */
#ifdef CONFIG_SYS_GENERIC_BOARD
mr r3, r1
- bl board_init_f_mem
+ bl board_init_f_alloc_reserve
mr r1, r3
+ bl board_init_f_init_reserve
stwu r0, -4(r1)
stwu r0, -4(r1)
#endif
diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S
index 5b4ee79..485868f 100644
--- a/arch/x86/cpu/start.S
+++ b/arch/x86/cpu/start.S
@@ -123,8 +123,9 @@
#endif
/* Set up global data */
mov %esp, %eax
- call board_init_f_mem
+ call board_init_f_alloc_reserve
mov %eax, %esp
+ call board_init_f_init_reserve
#ifdef CONFIG_DEBUG_UART
call debug_uart_init
diff --git a/arch/x86/lib/fsp/fsp_common.c b/arch/x86/lib/fsp/fsp_common.c
index 5276ce6..8479af1 100644
--- a/arch/x86/lib/fsp/fsp_common.c
+++ b/arch/x86/lib/fsp/fsp_common.c
@@ -90,8 +90,8 @@
/*
* The second time we enter here, adjust the size of malloc()
* pool before relocation. Given gd->malloc_base was adjusted
- * after the call to board_init_f_mem() in arch/x86/cpu/start.S,
- * we should fix up gd->malloc_limit here.
+ * after the call to board_init_f_init_reserve() in arch/x86/
+ * cpu/start.S, we should fix up gd->malloc_limit here.
*/
gd->malloc_limit += CONFIG_FSP_SYS_MALLOC_F_LEN;
}