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| author | Simon Glass <sjg@chromium.org> | 2014-10-10 07:49:16 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-10-23 19:45:28 -0600 |
| commit | 5dbcaa2128c50b4625f17ab2d9a5a8e5182441ba (patch) | |
| tree | 9578cb85c300aa67b8dce123c4f5dfb9a4d15806 /arch/x86/cpu | |
| parent | fbd72824263dfb48bfee999f8b92ba9cc8abac1b (diff) | |
| download | u-boot-imx-5dbcaa2128c50b4625f17ab2d9a5a8e5182441ba.zip u-boot-imx-5dbcaa2128c50b4625f17ab2d9a5a8e5182441ba.tar.gz u-boot-imx-5dbcaa2128c50b4625f17ab2d9a5a8e5182441ba.tar.bz2 | |
dm: x86: Support pre-reloc malloc()
Add support for this by reserving a block of memory below global_data.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/cpu')
| -rw-r--r-- | arch/x86/cpu/start.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 71cab22..338bab1 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -97,6 +97,13 @@ car_init_ret: /* Reserve space for global descriptor table */ subl $X86_GDT_SIZE, %esp +#if defined(CONFIG_SYS_MALLOC_F_LEN) + subl $CONFIG_SYS_MALLOC_F_LEN, %esp + movl %eax, %edx + addl $GD_MALLOC_BASE, %edx + movl %esp, (%edx) +#endif + /* Align temporary global descriptor table to 16-byte boundary */ andl $0xfffffff0, %esp |