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a47279154e
Manually rebased patches: bcm27xx: patches-5.4/950-0267-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch bcm53xx: patches-5.4/180-usb-xhci-add-support-for-performing-fake-doorbell.patch layerscape: patches-5.4/802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch patches-5.4/808-i2c-0002-MLK-10893-i2c-imx-add-irqf_no_suspend.patch patches-5.4/820-usb-0016-MLK-16735-usb-host-add-XHCI_CDNS_HOST-flag.patch Removed since could be reverse-applied by quilt: mediatek: patches-5.4/0700-arm-dts-mt7623-add-missing-pause-for-switchport.patch All modifications made by update_kernel.sh Build system: x86_64 Build-tested: ipq806x/R7800, ath79/generic, bcm27xx/bcm2711, x86_64 Run-tested: ipq806x/R7800, x86_64 No dmesg regressions, everything functional Signed-off-by: John Audia <graysky@archlinux.us> Tested-by: Curtis Deptuck <curtdept@me.com> [x86_64] Rebase of 802-can-0025-can-flexcan-add-LPSR-mode-support-for-i.MX7D.patch Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
--- a/arch/powerpc/Kconfig
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+++ b/arch/powerpc/Kconfig
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@@ -885,6 +885,14 @@ config CMDLINE_FORCE
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This is useful if you cannot or don't want to change the
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command-line options your boot loader passes to the kernel.
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+config CMDLINE_OVERRIDE
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+ bool "Use alternative cmdline from device tree"
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+ help
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+ Some bootloaders may have uneditable bootargs. While CMDLINE_FORCE can
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+ be used, this is not a good option for kernels that are shared across
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+ devices. This setting enables using "chosen/cmdline-override" as the
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+ cmdline if it exists in the device tree.
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+
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config EXTRA_TARGETS
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string "Additional default image types"
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help
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--- a/drivers/of/fdt.c
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+++ b/drivers/of/fdt.c
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@@ -1060,6 +1060,17 @@ int __init early_init_dt_scan_chosen(uns
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if (p != NULL && l > 0)
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strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
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+ /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
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+ * device tree option of chosen/bootargs-override. This is
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+ * helpful on boards where u-boot sets bootargs, and is unable
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+ * to be modified.
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+ */
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+#ifdef CONFIG_CMDLINE_OVERRIDE
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+ p = of_get_flat_dt_prop(node, "bootargs-override", &l);
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+ if (p != NULL && l > 0)
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+ strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
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+#endif
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+
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/*
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* CONFIG_CMDLINE is meant to be a default in case nothing else
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* managed to set the command line, unless CONFIG_CMDLINE_FORCE
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