diff options
| author | Simon Glass <sjg@chromium.org> | 2018-10-01 12:22:37 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-10-09 04:40:27 -0600 |
| commit | 590cee8315e94e729493d2ecd8a604bcfbfa7d0e (patch) | |
| tree | 2ac3eacb5e1a1274da1efd3fe34a893d8d978d65 /arch/x86/include/asm | |
| parent | 6f1c0430e88396abc8e6a91ab3cc78882c76cb7c (diff) | |
x86: Update mtrr functions to allow leaving cache alone
At present the mtrr functions disable the cache before making changes and
enable it again afterwards. This is fine in U-Boot, but does not work if
running in CAR (such as we are in SPL).
Update the functions so that the caller can request that caches be left
alone.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/mtrr.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/include/asm/mtrr.h b/arch/x86/include/asm/mtrr.h index 05cd7b7f17..2d897f82ef 100644 --- a/arch/x86/include/asm/mtrr.h +++ b/arch/x86/include/asm/mtrr.h @@ -77,8 +77,9 @@ struct mtrr_state { * possibly the cache. * * @state: Empty structure to pass in to hold settings + * @do_caches: true to disable caches before opening */ -void mtrr_open(struct mtrr_state *state); +void mtrr_open(struct mtrr_state *state, bool do_caches); /** * mtrr_open() - Clean up after adjusting MTRRs, and enable them @@ -86,8 +87,9 @@ void mtrr_open(struct mtrr_state *state); * This uses the structure containing information returned from mtrr_open(). * * @state: Structure from mtrr_open() + * @state: true to restore cache state to that before mtrr_open() */ -void mtrr_close(struct mtrr_state *state); +void mtrr_close(struct mtrr_state *state, bool do_caches); /** * mtrr_add_request() - Add a new MTRR request |