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microblaze: start.S: Use board_init_f_alloc/init in early init 

Implement early init by calling generic board_init_f_alloc_reserve and
board_init_f_init_reserve functions:
* drop SYS_MALLOC_F_LEN related code, as allocation and gd->malloc_base
  assignment are taken care of by the generic functions
* drop _gd logic

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
This commit is contained in:
Ovidiu Panait 2020-09-24 11:54:37 +03:00 committed by Michal Simek
parent 627085eacf
commit f5d8b1a1f9
2 changed files with 23 additions and 26 deletions
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46
arch/microblaze/cpu/start.S
View File

@ -17,25 +17,39 @@ _start:
addi r8, r0, __end
mts rslr, r8
/* TODO: Redo this code to call board_init_f_*() */
#if defined(CONFIG_SPL_BUILD)
addi r1, r0, CONFIG_SPL_STACK_ADDR
mts rshr, r1
addi r1, r1, -4 /* Decrement SP to top of memory */
#else
#if CONFIG_VAL(SYS_MALLOC_F_LEN)
addi r1, r0, CONFIG_SYS_INIT_SP_OFFSET - CONFIG_VAL(SYS_MALLOC_F_LEN)
#else
addi r1, r0, CONFIG_SYS_INIT_SP_OFFSET
#endif
mts rshr, r1
addi r1, r1, -4 /* Decrement SP to top of memory */
/* Call board_init_f_alloc_reserve with the current stack pointer as
* parameter. */
add r5, r0, r1
bralid r15, board_init_f_alloc_reserve
nop
/* board_init_f_alloc_reserve returns a pointer to the allocated area
* in r3. Set the new stack pointer below this area. */
add r1, r0, r3
mts rshr, r1
addi r1, r1, -4
/* Call board_init_f_init_reserve with the address returned by
* board_init_f_alloc_reserve as parameter. */
add r5, r0, r3
bralid r15, board_init_f_init_reserve
nop
#if !defined(CONFIG_SPL_BUILD)
/* Setup vectors with pre-relocation symbols */
or r5, r0, r0
bralid r15, __setup_exceptions
nop
#endif /* CONFIG_SPL_BUILD */
#endif
/* Flush cache before enable cache */
addik r5, r0, 0
@ -48,7 +62,6 @@ _start:
ori r12, r12, 0x1a0
mts rmsr, r12
/* TODO: Redo this code to call board_init_f_*() */
clear_bss:
/* clear BSS segments */
addi r5, r0, __bss_start
@ -67,27 +80,12 @@ clear_bss:
#endif
#ifndef CONFIG_SPL_BUILD
or r5, r0, r0 /* flags - empty */
addi r31, r0, _gd
#if CONFIG_VAL(SYS_MALLOC_F_LEN)
addi r6, r0, CONFIG_SYS_INIT_SP_OFFSET
swi r6, r31, GD_MALLOC_BASE
#endif
brai board_init_f
#else
addi r31, r0, _gd
#if CONFIG_VAL(SYS_MALLOC_F_LEN)
addi r6, r0, CONFIG_SPL_STACK_ADDR
swi r6, r31, GD_MALLOC_BASE
#endif
brai board_init_r
#endif
1: bri 1b
.section .bss
.align 4
_gd:
.space GENERATED_GBL_DATA_SIZE
#ifndef CONFIG_SPL_BUILD
.text
.ent __setup_exceptions

3
include/configs/microblaze-generic.h
View File

@ -167,8 +167,7 @@
#define CONFIG_SYS_INIT_RAM_SIZE 0x100000
# define CONFIG_SPL_STACK_ADDR (CONFIG_SYS_INIT_RAM_ADDR + \
CONFIG_SYS_INIT_RAM_SIZE - \
CONFIG_SYS_MALLOC_F_LEN)
CONFIG_SYS_INIT_RAM_SIZE)
/* Just for sure that there is a space for stack */
#define CONFIG_SPL_STACK_SIZE 0x100