To enable DM on MPC85xx, we need pre-relocation malloc, which is implemented in this patch.
Signed-off-by: Mario Six mario.six@gdsys.cc Cc: York Sun york.sun@nxp.com Cc: Simon Glass sjg@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