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| author | Simon Glass <sjg@chromium.org> | 2014-10-10 07:49:15 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-10-23 19:45:28 -0600 |
| commit | fbd72824263dfb48bfee999f8b92ba9cc8abac1b (patch) | |
| tree | 00ad08ef13a99a445640ce30202aa30dccbf62ac /arch | |
| parent | 9c284ffd93cda1e434eeece0d95698157d00fe18 (diff) | |
| download | u-boot-imx-fbd72824263dfb48bfee999f8b92ba9cc8abac1b.zip u-boot-imx-fbd72824263dfb48bfee999f8b92ba9cc8abac1b.tar.gz u-boot-imx-fbd72824263dfb48bfee999f8b92ba9cc8abac1b.tar.bz2 | |
dm: x86: Zero global data before board_init_f()
To permit information to be passed from the early U-Boot code to
board_init_f() we cannot zero the global_data in board_init_f(). Instead
zero it in the start-up code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/cpu/start.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 329bb3a..71cab22 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -85,6 +85,12 @@ car_init_ret: /* Align global data to 16-byte boundary */ andl $0xfffffff0, %esp + /* Zero the global data since it won't happen later */ + xorl %eax, %eax + movl $GENERATED_GBL_DATA_SIZE, %ecx + movl %esp, %edi + rep stosb + /* Setup first parameter to setup_gdt */ movl %esp, %eax |