To enable DM on MPC85xx, we need pre-relocation malloc, which is
implemented in this patch.
Signed-off-by: Mario Six <mario....@gdsys.cc>
Cc: York Sun <york....@nxp.com>
Cc: Simon Glass <s...@chromium.org>
---
arch/powerpc/cpu/mpc85xx/cpu_init_early.c | 8 --------
arch/powerpc/cpu/mpc85xx/start.S | 28 ++++++++++++++++++++++++++++
2 files changed, 28 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
index 235a635..e6e1688 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
@@ -82,7 +82,6 @@ void setup_ifc(void)
void cpu_init_early_f(void *fdt)
{
u32 mas0, mas1, mas2, mas3, mas7;
- int i;
#ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549
ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#endif
@@ -95,13 +94,6 @@ void cpu_init_early_f(void *fdt)
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
- /*
- * Clear initial global data
- * we don't use memset so we can share this code with NAND_SPL
- */
- for (i = 0; i < sizeof(gd_t); i++)
- ((char *)gd)[i] = 0;
-
#ifdef CONFIG_QEMU_E500
/*
* CONFIG_SYS_CCSRBAR_PHYS below may use gd->fdt_blob on ePAPR systems,
diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S
index d867e2a..e6b5203 100644
--- a/arch/powerpc/cpu/mpc85xx/start.S
+++ b/arch/powerpc/cpu/mpc85xx/start.S
@@ -1152,6 +1152,34 @@ _start_cont:
/* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
lis r3,(CONFIG_SYS_INIT_RAM_ADDR)@h
ori r3,r3,((CONFIG_SYS_INIT_SP_OFFSET-16)&~0xf)@l /* Align to 16 */
+
+#ifdef CONFIG_SYS_MALLOC_F_LEN
+ /* Leave 16+ byte for back chain termination and NULL return address */
+ subi r3,r3,((CONFIG_SYS_MALLOC_F_LEN+16+15)&~0xf)
+
+ /* End of RAM */
+ lis r4,(CONFIG_SYS_INIT_RAM_ADDR)@h
+ ori r4,r4,(CONFIG_SYS_INIT_RAM_SIZE)@l
+
+ li r0,0
+
+1: subi r4,r4,4
+ stw r0,0(r4)
+ cmplw r4,r3
+ bne 1b
+
+ lis r4,(CONFIG_SYS_INIT_RAM_ADDR)@h
+ ori r4,r4,(CONFIG_SYS_GBL_DATA_OFFSET)@l
+
+ addi r3,r3,16 /* Pre-relocation malloc area */
+ stw r3,GD_MALLOC_BASE(r4)
+ subi r3,r3,16
+
+ /* Fix issue with exception handler alignment */
+ nop
+ nop
+ nop
+#endif
li r0,0
stw r0,0(r3) /* Terminate Back Chain */
stw r0,+4(r3) /* NULL return address. */
--
2.7.0.GIT
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
