diff options
| author | Simon Glass <sjg@chromium.org> | 2023-05-09 18:13:47 +0800 |
|---|---|---|
| committer | Bin Meng <bmeng@tinylab.org> | 2023-05-11 10:25:29 +0800 |
| commit | 6624392d3bb633fe91b7cc4b75b6eec28f637f72 (patch) | |
| tree | 93e539468c4897944a093fd9cfc8c2416b020d9b | |
| parent | 3d0f885a2adc9320a01a905a9deaa06d51614d92 (diff) | |
| download | u-boot-6624392d3bb633fe91b7cc4b75b6eec28f637f72.tar.gz | |
x86: sysreset: Set up LPC only after relocation
Probing LPC can cause PCI enumeration to take place, which significantly
increases pre-relocation memory usage. Also, LPC is somtimes enabled
directly by SPL.
Adjust the logic to probe the LPC only after relocation. This allows
chromebook_link64 to start up without a much larger
CONFIG_SYS_MALLOC_F_LEN value.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| -rw-r--r-- | drivers/sysreset/sysreset_x86.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/sysreset/sysreset_x86.c b/drivers/sysreset/sysreset_x86.c index 8042f3994f..4936fdb76c 100644 --- a/drivers/sysreset/sysreset_x86.c +++ b/drivers/sysreset/sysreset_x86.c @@ -129,8 +129,13 @@ static int x86_sysreset_probe(struct udevice *dev) { struct x86_sysreset_plat *plat = dev_get_plat(dev); - /* Locate the PCH if there is one. It isn't essential */ - uclass_first_device(UCLASS_PCH, &plat->pch); + /* + * Locate the PCH if there is one. It isn't essential. Avoid this before + * relocation as we shouldn't need reset then and it needs a lot of + * memory for PCI enumeration. + */ + if (gd->flags & GD_FLG_RELOC) + uclass_first_device(UCLASS_PCH, &plat->pch); return 0; } |