path: root/Kconfig
diff options
authorHans de Goede <>2015-09-13 15:04:17 +0200
committerHans de Goede <>2015-10-20 18:40:27 +0200
commitdcfcb8d49a291736623b630ae977e4184590f8fe (patch)
tree81f115b143c047a7f47037ce4de7ea875ef72aa5 /Kconfig
parent1eb0c03c2198a7ec9de456b83dacdc4831b96cbf (diff)
malloc_simple: Add support for switching to DRAM heap
malloc_simple uses a part of the stack as heap, initially it uses SYS_MALLOC_F_LEN bytes which typically is quite small as the initial stacks sits in SRAM and we do not have that much SRAM to work with. When DRAM becomes available we may switch the stack from SRAM to DRAM to give use more room. This commit adds support for also switching to a new bigger malloc_simple heap located in the new stack. Note that this requires spl_init to be called before spl_relocate_stack_gd which in practice means that spl_init must be called from board_init_f. Signed-off-by: Hans de Goede <> Reviewed-by: Tom Rini <> Acked-by: Simon Glass <>
Diffstat (limited to 'Kconfig')
1 files changed, 10 insertions, 0 deletions
diff --git a/Kconfig b/Kconfig
index b4ad610f61..44b144f1c2 100644
--- a/Kconfig
+++ b/Kconfig
@@ -142,6 +142,16 @@ config SPL_STACK_R_ADDR
Specify the address in SDRAM for the SPL stack. This will be set up
before board_init_r() is called.
+ hex "Size of malloc_simple heap after switching to DRAM SPL stack"
+ default 0x100000
+ help
+ Specify the amount of the stack to use as memory pool for
+ malloc_simple after switching the stack to DRAM. This may be set
+ to give board_init_r() a larger heap then the initial heap in
+ SRAM which is limited to SYS_MALLOC_F_LEN bytes.
config TPL
depends on SPL && SUPPORT_TPL
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