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microblaze: spl: Do not call mem_malloc_init and use early alloc 

This patch has some parts connected together:
- Use _gd in bss section which is automatically cleared
  Location at SPL_MALLOC_END wasn't cleared at all
- Use MALLOC_F_LEN(early alloc) instead of FULL MALLOC
  (mem_malloc_init is not called at all)
- Simplify malloc and stack init.
  At the end of SPL addr is malloc area and below is stack

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
utp
Michal Simek 2015-02-03 16:24:48 +01:00
parent 405e651d70
commit ca7d22662e
2 changed files with 16 additions and 22 deletions
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6
arch/microblaze/cpu/start.S
View File

@ -162,7 +162,11 @@ clear_bss:
#endif
brai board_init_f
#else
addi r31, r0, CONFIG_SYS_SPL_MALLOC_END
addi r31, r0, _gd
#if defined(CONFIG_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

32
include/configs/microblaze-generic.h
View File

@ -113,7 +113,12 @@
#endif
#define CONFIG_SYS_MALLOC_LEN 0xC0000
#define CONFIG_SYS_MALLOC_F_LEN 1024
#ifndef CONFIG_SPL_BUILD
# define CONFIG_SYS_MALLOC_F_LEN 1024
#else
# define CONFIG_SYS_MALLOC_SIMPLE
# define CONFIG_SYS_MALLOC_F_LEN 0x150
#endif
/* Stack location before relocation */
#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_TEXT_BASE
@ -426,25 +431,11 @@
/* BRAM start */
#define CONFIG_SYS_INIT_RAM_ADDR 0x0
/* BRAM size - will be generated */
#define CONFIG_SYS_INIT_RAM_SIZE 0x10000
/* Stack pointer prior relocation, must situated at on-chip RAM */
#define CONFIG_SYS_SPL_MALLOC_END (CONFIG_SYS_INIT_RAM_ADDR + \
#define CONFIG_SYS_INIT_RAM_SIZE 0x100000
# define CONFIG_SPL_STACK_ADDR (CONFIG_SYS_INIT_RAM_ADDR + \
CONFIG_SYS_INIT_RAM_SIZE - \
GENERATED_GBL_DATA_SIZE)
#define CONFIG_SYS_SPL_MALLOC_SIZE 0x100
/*
* The main reason to do it in this way is that MALLOC_START
* can't be defined - common/spl/spl.c
*/
#if (CONFIG_SYS_SPL_MALLOC_SIZE != 0)
# define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SYS_SPL_MALLOC_END - \
CONFIG_SYS_SPL_MALLOC_SIZE)
# define CONFIG_SPL_STACK_ADDR CONFIG_SYS_SPL_MALLOC_START
#else
# define CONFIG_SPL_STACK_ADDR CONFIG_SYS_SPL_MALLOC_END
#endif
CONFIG_SYS_MALLOC_F_LEN)
/* Just for sure that there is a space for stack */
#define CONFIG_SPL_STACK_SIZE 0x100
@ -453,8 +444,7 @@
#define CONFIG_SPL_MAX_FOOTPRINT (CONFIG_SYS_INIT_RAM_SIZE - \
CONFIG_SYS_INIT_RAM_ADDR - \
GENERATED_GBL_DATA_SIZE - \
CONFIG_SYS_SPL_MALLOC_SIZE - \
CONFIG_SYS_MALLOC_F_LEN - \
CONFIG_SPL_STACK_SIZE)
#endif /* __CONFIG_H */