openwrt/target/linux/mpc85xx/patches-4.9/102-powerpc-add-cmdline-override.patch
Stijn Tintel f621b53951 kernel: bump 4.9 to 4.9.82
Refresh patches.
Remove upstreamed patches:
- ar7/002-MIPS-AR7-ensure-the-port-type-s-FCR-value-is-used.patch
- backport/040-crypto-fix-typo-in-KPP-dependency-of-CRYPTO_ECDH.patch
Remove layerscape/819-Revert-dmaengine-dmatest-move-callback-wait-queue-to.patch,
it is superseded by upstream commit 297c7cc4b5651b174a62925b6c961085f04979fd.
Remove pending/650-pppoe_header_pad.patch, it is superseded by
upstream commit 1bd21b158e07e0b8c5a2ce832305a0ebfe42c480.
Update patches that no longer apply:
- ar71xx/004-register_gpio_driver_earlier.patch
- hack/204-module_strip.patch
- pending/493-ubi-set-ROOT_DEV-to-ubiblock-rootfs-if-unset.patch

Fixes CVE-2017-8824.

Compile-tested: ar71xx.
Runtime-tested: ar71xx.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2018-02-18 02:59:57 +01:00

38 lines
1.3 KiB
Diff

--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -708,6 +708,14 @@ config CMDLINE_FORCE
This is useful if you cannot or don't want to change the
command-line options your boot loader passes to the kernel.
+config CMDLINE_OVERRIDE
+ bool "Use alternative cmdline from device tree"
+ help
+ Some bootloaders may have uneditable bootargs. While CMDLINE_FORCE can
+ be used, this is not a good option for kernels that are shared across
+ devices. This setting enables using "chosen/cmdline-override" as the
+ cmdline if it exists in the device tree.
+
config EXTRA_TARGETS
string "Additional default image types"
help
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1079,6 +1079,17 @@ int __init early_init_dt_scan_chosen(uns
if (p != NULL && l > 0)
strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
+ /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
+ * device tree option of chosen/bootargs-override. This is
+ * helpful on boards where u-boot sets bootargs, and is unable
+ * to be modified.
+ */
+#ifdef CONFIG_CMDLINE_OVERRIDE
+ p = of_get_flat_dt_prop(node, "bootargs-override", &l);
+ if (p != NULL && l > 0)
+ strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
+#endif
+
/*
* CONFIG_CMDLINE is meant to be a default in case nothing else
* managed to set the command line, unless CONFIG_CMDLINE_FORCE