diff options
| author | Simon Glass <sjg@chromium.org> | 2020-07-17 08:48:22 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-20 09:46:46 +0800 |
| commit | 240752c612e61222f79c4514210f7be44854f4ca (patch) | |
| tree | 6286a30c29275ffb1f8223f70f39aa031f0bb2dc /arch/x86/include/asm | |
| parent | 0538d6833cc61722ee506fab4609d9c1cf010491 (diff) | |
x86: mtrr: Use MP calls to list the MTRRs
Update the mtrr command to use mp_run_on_cpus() to obtain its information.
Since the selected CPU is the boot CPU this does not change the result,
but it sets the stage for supporting other CPUs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/mtrr.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mtrr.h b/arch/x86/include/asm/mtrr.h index 212a699c1b..e1f1a44643 100644 --- a/arch/x86/include/asm/mtrr.h +++ b/arch/x86/include/asm/mtrr.h @@ -71,6 +71,26 @@ struct mtrr_state { }; /** + * struct mtrr - Information about a single MTRR + * + * @base: Base address and MTRR_BASE_TYPE_MASK + * @mask: Mask and MTRR_PHYS_MASK_VALID + */ +struct mtrr { + u64 base; + u64 mask; +}; + +/** + * struct mtrr_info - Information about all MTRRs + * + * @mtrr: Information about each mtrr + */ +struct mtrr_info { + struct mtrr mtrr[MTRR_COUNT]; +}; + +/** * mtrr_open() - Prepare to adjust MTRRs * * Use mtrr_open() passing in a structure - this function will init it. Then @@ -129,6 +149,16 @@ int mtrr_commit(bool do_caches); */ int mtrr_set_next_var(uint type, uint64_t base, uint64_t size); +/** + * mtrr_read_all() - Save all the MTRRs + * + * This reads all MTRRs from the boot CPU into a struct so they can be loaded + * onto other CPUs + * + * @info: Place to put the MTRR info + */ +void mtrr_read_all(struct mtrr_info *info); + #endif #if ((CONFIG_XIP_ROM_SIZE & (CONFIG_XIP_ROM_SIZE - 1)) != 0) |