openwrt/target/linux/generic/pending-6.6/920-mangle_bootargs.patch
John Audia 5158e28769 kernel: bump 6.6 to 6.6.64
Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.64

Manually rebased:
	generic/hack-6.6/780-usb-net-MeigLink_modem_support.patch
	bcm27xx/patches-6.6/950-0585-drm-vc4-Introduce-generation-number-enum.patch
	bcm27xx/patches-6.6/950-0610-drm-vc4-hvs-Support-BCM2712-HVS.patch
	bcm27xx/patches-6.6/950-0829-vc4-hvs-Add-support-for-D0-register-changes.patch

Removed upstreamed:
	bcm27xx/patches-6.6/950-0597-drm-vc4-hdmi-Avoid-hang-with-debug-registers-when-su.patch[1]
	bcm27xx/patches-6.6/950-0599-drm-vc4-Fix-dlist-debug-not-resetting-the-next-entry.patch[2]
	bcm27xx/patches-6.6/950-0600-drm-vc4-Remove-incorrect-limit-from-hvs_dlist-debugf.patch[3]
	bcm27xx/patches-6.6/950-0708-drm-vc4-Correct-logic-on-stopping-an-HVS-channel.patch[4]
	ramips/patches-6.6/002-01-v6.13-clk-ralink-mtmips-fix-clock-plan-for-Ralink-SoC-RT38.patch[5]
	ramips/patches-6.6/002-02-v6.13-clk-ralink-mtmips-fix-clocks-probe-order-in-oldest-r.patch[6]

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.64&id=223ee2567a55e4f80315c768d2969e6a3b9fb23d
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.64&id=8182b5ca19c6f173b6498d1c6d3e4b034b76bbde
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.64&id=52c1716f65a558174e381360bd88f18dae4be85c
4. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.64&id=9728b508b01a5eeeac79ceb676364c674dd951ac
5. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.64&id=f85a1d06afbcc57ac44176db8f9d7a934979952c
6. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.64&id=fbb13732c6ffa9d58cedafabcd5ce8fd7ef8ae5a

Build system: x86/64
Build-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3
Run-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3

Co-authored-by: Mieczyslaw Nalewaj <namiltd@yahoo.com>
Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/17217
Signed-off-by: Robert Marko <robimarko@gmail.com>
2024-12-13 21:40:02 +01:00

72 lines
1.8 KiB
Diff

From: Imre Kaloz <kaloz@openwrt.org>
Subject: init: add CONFIG_MANGLE_BOOTARGS and disable it by default
Enabling this option renames the bootloader supplied root=
and rootfstype= variables, which might have to be know but
would break the automatisms OpenWrt uses.
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
---
init/Kconfig | 9 +++++++++
init/main.c | 24 ++++++++++++++++++++++++
2 files changed, 33 insertions(+)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1820,6 +1820,15 @@ config DEBUG_RSEQ
If unsure, say N.
+config MANGLE_BOOTARGS
+ bool "Rename offending bootargs"
+ depends on EXPERT
+ help
+ Sometimes the bootloader passed bogus root= and rootfstype=
+ parameters to the kernel, and while you want to ignore them,
+ you need to know the values f.e. to support dual firmware
+ layouts on the flash.
+
config HAVE_PERF_EVENTS
bool
help
--- a/init/main.c
+++ b/init/main.c
@@ -608,6 +608,29 @@ static inline void setup_nr_cpu_ids(void
static inline void smp_prepare_cpus(unsigned int maxcpus) { }
#endif
+#ifdef CONFIG_MANGLE_BOOTARGS
+static void __init mangle_bootargs(char *command_line)
+{
+ char *rootdev;
+ char *rootfs;
+
+ rootdev = strstr(command_line, "root=/dev/mtdblock");
+
+ if (rootdev)
+ strncpy(rootdev, "mangled_rootblock=", 18);
+
+ rootfs = strstr(command_line, "rootfstype");
+
+ if (rootfs)
+ strncpy(rootfs, "mangled_fs", 10);
+
+}
+#else
+static void __init mangle_bootargs(char *command_line)
+{
+}
+#endif
+
/*
* We need to store the untouched command line for future reference.
* We also need to store the touched command line since the parameter
@@ -897,6 +920,7 @@ void start_kernel(void)
pr_notice("%s", linux_banner);
early_security_init();
setup_arch(&command_line);
+ mangle_bootargs(command_line);
setup_boot_config();
setup_command_line(command_line);
setup_nr_cpu_ids();