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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2020-11-22 00:47:04 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2021-01-28 08:52:35 +0000 |
| commit | 404c0c455c4f9ae3b1c40f8fbe8328349b6b547d (patch) | |
| tree | 4ea2c45ea0163369482d48d26ac73acd0081e9cd /src/cpu/x86/reset16.S | |
| parent | 0308313e07caf60ac77c416a448026c09351fe5d (diff) | |
cpu/x86: Link reset16.inc
Change-Id: If2caab67286cf77e37928e03be4f581070e771d8
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47968
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/cpu/x86/reset16.S')
| -rw-r--r-- | src/cpu/x86/reset16.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/cpu/x86/reset16.S b/src/cpu/x86/reset16.S new file mode 100644 index 0000000000..38580146b4 --- /dev/null +++ b/src/cpu/x86/reset16.S @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + + .section ".reset", "ax", %progbits + .code16 +.globl _start +_start: + .byte 0xe9 + .int _start16bit - ( . + 2 ) + /* Note: The above jump is hand coded to work around bugs in binutils. + * 5 byte are used for a 3 byte instruction. This works because x86 + * is little endian and allows us to use supported 32bit relocations + * instead of the weird 16 bit relocations that binutils does not + * handle consistently between versions because they are used so rarely. + */ |