diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2016-05-11 07:44:59 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2016-05-23 15:18:00 +0800 |
| commit | 789b6dceccbb852b0be235334b713467f88e2f8e (patch) | |
| tree | 2a8f7906144a677809b2613b5093c98d68e59f49 /arch/x86/include/asm | |
| parent | 548344912f791ff7f7f932afdaf669f45a20448b (diff) | |
x86: Prepare configuration tables in dedicated high memory region
Currently when CONFIG_SEABIOS is on, U-Boot allocates configuration
tables via normal malloc(). To simplify, use a dedicated memory
region which is reserved on the stack before relocation for this
purpose. Add functions for reserve and malloc.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/coreboot_tables.h | 19 | ||||
| -rw-r--r-- | arch/x86/include/asm/global_data.h | 4 |
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/x86/include/asm/coreboot_tables.h b/arch/x86/include/asm/coreboot_tables.h index 15ccf9be6c..e036f744f6 100644 --- a/arch/x86/include/asm/coreboot_tables.h +++ b/arch/x86/include/asm/coreboot_tables.h @@ -295,6 +295,25 @@ struct cbmem_entry { #define CBMEM_ID_NONE 0x00000000 /** + * high_table_reserve() - reserve configuration table in high memory + * + * This reserves configuration table in high memory. + * + * @return: always 0 + */ +int high_table_reserve(void); + +/** + * high_table_malloc() - allocate configuration table in high memory + * + * This allocates configuration table in high memory. + * + * @bytes: size of configuration table to be allocated + * @return: pointer to configuration table in high memory + */ +void *high_table_malloc(size_t bytes); + +/** * write_coreboot_table() - write coreboot table * * This writes coreboot table at a given address. diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h index 3bc2ac24cf..7434f779b6 100644 --- a/arch/x86/include/asm/global_data.h +++ b/arch/x86/include/asm/global_data.h @@ -93,6 +93,10 @@ struct arch_global_data { char *mrc_output; unsigned int mrc_output_len; ulong table; /* Table pointer from previous loader */ +#ifdef CONFIG_SEABIOS + u32 high_table_ptr; + u32 high_table_limit; +#endif }; #endif |