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x86: Support writing configuration tables in high area
For those secondary bootloaders like SeaBIOS who want to live in the F segment, which conflicts the configuration table address, now we allow write_tables() to write the configuration tables in high area (malloc'ed memory). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
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1 changed files with 11 additions and 0 deletions
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@ -67,11 +67,22 @@ void write_tables(void)
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{
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{
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u32 rom_table_start = ROM_TABLE_ADDR;
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u32 rom_table_start = ROM_TABLE_ADDR;
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u32 rom_table_end;
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u32 rom_table_end;
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u32 high_table, table_size;
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int i;
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int i;
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for (i = 0; i < ARRAY_SIZE(table_write_funcs); i++) {
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for (i = 0; i < ARRAY_SIZE(table_write_funcs); i++) {
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rom_table_end = table_write_funcs[i](rom_table_start);
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rom_table_end = table_write_funcs[i](rom_table_start);
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rom_table_end = ALIGN(rom_table_end, ROM_TABLE_ALIGN);
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rom_table_end = ALIGN(rom_table_end, ROM_TABLE_ALIGN);
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table_size = rom_table_end - rom_table_start;
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high_table = (u32)memalign(ROM_TABLE_ALIGN, table_size);
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if (high_table) {
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memset((void *)high_table, 0, table_size);
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table_write_funcs[i](high_table);
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} else {
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printf("%d: no memory for configuration tables\n", i);
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}
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rom_table_start = rom_table_end;
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rom_table_start = rom_table_end;
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}
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}
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}
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}
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