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authorBin Meng <bmeng.cn@gmail.com>2016-02-27 22:58:02 -0800
committerBin Meng <bmeng.cn@gmail.com>2016-03-17 10:27:22 +0800
commitff94c219e95843fe24710c16a66efdfb6ca536a9 (patch)
tree0050b917988469de7e701bacdcb6c2742070b128 /arch/x86/lib
parentef4d0a524eb1929354b01036830799261090fcbe (diff)
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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>
Diffstat (limited to 'arch/x86/lib')
-rw-r--r--arch/x86/lib/tables.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/lib/tables.c b/arch/x86/lib/tables.c
index 9f0d928..eccef8a 100644
--- a/arch/x86/lib/tables.c
+++ b/arch/x86/lib/tables.c
@@ -67,11 +67,22 @@ void write_tables(void)
{
u32 rom_table_start = ROM_TABLE_ADDR;
u32 rom_table_end;
+ u32 high_table, table_size;
int i;
for (i = 0; i < ARRAY_SIZE(table_write_funcs); i++) {
rom_table_end = table_write_funcs[i](rom_table_start);
rom_table_end = ALIGN(rom_table_end, ROM_TABLE_ALIGN);
+
+ table_size = rom_table_end - rom_table_start;
+ high_table = (u32)memalign(ROM_TABLE_ALIGN, table_size);
+ if (high_table) {
+ memset((void *)high_table, 0, table_size);
+ table_write_funcs[i](high_table);
+ } else {
+ printf("%d: no memory for configuration tables\n", i);
+ }
+
rom_table_start = rom_table_end;
}
}