From ef329a6a736ba1bbfb940edc34ceaa14d3f45b53 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Wed, 24 Oct 2018 06:36:37 -0700 Subject: [PATCH] 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 Reviewed-by: Simon Glass --- arch/x86/cpu/tangier/sysreset.c | 1 - drivers/sysreset/sysreset_x86.c | 1 - lib/efi/efi_app.c | 1 - 3 files changed, 3 deletions(-) diff --git a/arch/x86/cpu/tangier/sysreset.c b/arch/x86/cpu/tangier/sysreset.c index e762ee1b81..b03bc28f93 100644 --- a/arch/x86/cpu/tangier/sysreset.c +++ b/arch/x86/cpu/tangier/sysreset.c @@ -44,5 +44,4 @@ U_BOOT_DRIVER(tangier_sysreset) = { .id = UCLASS_SYSRESET, .of_match = tangier_sysreset_ids, .ops = &tangier_sysreset_ops, - .flags = DM_FLAG_PRE_RELOC, }; 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, }; diff --git a/lib/efi/efi_app.c b/lib/efi/efi_app.c index 5879d40386..0047998ee0 100644 --- a/lib/efi/efi_app.c +++ b/lib/efi/efi_app.c @@ -161,5 +161,4 @@ U_BOOT_DRIVER(efi_sysreset) = { .id = UCLASS_SYSRESET, .of_match = efi_sysreset_ids, .ops = &efi_sysreset_ops, - .flags = DM_FLAG_PRE_RELOC, }; -- 2.39.5