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| author | Bin Meng <bmeng.cn@gmail.com> | 2018-10-24 06:36:37 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-11-14 09:16:28 -0800 |
| commit | ef329a6a736ba1bbfb940edc34ceaa14d3f45b53 (patch) | |
| tree | 514c9766277a6361529909028edab158df9befa6 /drivers/sysreset | |
| parent | 4687919684e0e4390b9fc20d1809ecaa9dc3cb81 (diff) | |
| download | u-boot-ef329a6a736ba1bbfb940edc34ceaa14d3f45b53.tar.gz u-boot-ef329a6a736ba1bbfb940edc34ceaa14d3f45b53.tar.bz2 u-boot-ef329a6a736ba1bbfb940edc34ceaa14d3f45b53.zip | |
sysreset: Remove DM_FLAG_PRE_RELOC flag in various drivers
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.
To mitigate this potential impact, the following changes are
implemented:
- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
drivers that support both statically declared devices and
configuration from device tree
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/sysreset')
| -rw-r--r-- | drivers/sysreset/sysreset_x86.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/sysreset/sysreset_x86.c b/drivers/sysreset/sysreset_x86.c index 5943a63854..20b958cfd4 100644 --- a/drivers/sysreset/sysreset_x86.c +++ b/drivers/sysreset/sysreset_x86.c @@ -45,5 +45,4 @@ U_BOOT_DRIVER(x86_sysreset) = { .id = UCLASS_SYSRESET, .of_match = x86_sysreset_ids, .ops = &x86_sysreset_ops, - .flags = DM_FLAG_PRE_RELOC, }; |