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authorLinus Torvalds <[email protected]>2024-07-20 09:03:36 -0700
committerLinus Torvalds <[email protected]>2024-07-20 09:03:36 -0700
commitd2be38b9a5514dbc7dc0c96a2a7f619fcddce00d (patch)
tree8588d09562d7171ab95b07d9c00fa18b6b691bd3 /arch/mips/generic/board-realtek.c
parent3c3ff7be9729959699eb6cbc7fd7303566d74069 (diff)
parentbb2d63500b5c8fd1ea425caffe2d44c931fefc6b (diff)
Merge tag 'mips_6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer: - add support for Realtek RTL9302C - add support for Mobileye EyeQ6H - add support for Mobileye EyeQ OLB system controller - improve r4k clocksource - add mode for emulating ieee754 NAN2008 - rework for BMIPS CBR address handling - fixes for Loongson 2K1000 - defconfig updates - cleanups and fixes * tag 'mips_6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (58 commits) MIPS: config: Add ip30_defconfig MIPS: config: lemote2f: Regenerate defconfig MIPS: config: generic: Add board-litex MIPS: config: Enable MSA and virtualization for MIPS64R6 MIPS: Fix fallback march for SB1 mips: dts: realtek: Add RTL9302C board mips: generic: add fdt fixup for Realtek reference board mips: select REALTEK_OTTO_TIMER for Realtek platforms dt-bindings: interrupt-controller: realtek,rtl-intc: Add rtl9300-intc dt-bindings: mips: realtek: Add rtl930x-soc compatible dt-bindings: vendor-prefixes: Add Cameo Communications mips: dts: realtek: add device_type property to cpu node mips: dts: realtek: use "serial" instead of "uart" in node name MIPS: Implement ieee754 NAN2008 emulation mode MIPS: lantiq: improve USB initialization MIPS: GIC: Generate redirect block accessors MIPS: CPS: Add a couple of multi-cluster utility functions MIPS: Octeron: remove source file executable bit MAINTAINERS: Mobileye: add OLB drivers and dt-bindings MIPS: mobileye: eyeq5: add OLB system-controller node ...
Diffstat (limited to 'arch/mips/generic/board-realtek.c')
-rw-r--r--arch/mips/generic/board-realtek.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/mips/generic/board-realtek.c b/arch/mips/generic/board-realtek.c
new file mode 100644
index 000000000000..9cce6103d24e
--- /dev/null
+++ b/arch/mips/generic/board-realtek.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2024 Allied Telesis
+ */
+
+#include <linux/errno.h>
+#include <linux/libfdt.h>
+#include <linux/printk.h>
+#include <linux/types.h>
+
+#include <asm/fw/fw.h>
+#include <asm/machine.h>
+
+static __init int realtek_add_initrd(void *fdt)
+{
+ int node, err;
+ u32 start, size;
+
+ node = fdt_path_offset(fdt, "/chosen");
+ if (node < 0) {
+ pr_err("/chosen node not found\n");
+ return -ENOENT;
+ }
+
+ start = fw_getenvl("initrd_start");
+ size = fw_getenvl("initrd_size");
+
+ if (start == 0 && size == 0)
+ return 0;
+
+ pr_info("Adding initrd info from environment\n");
+
+ err = fdt_setprop_u32(fdt, node, "linux,initrd-start", start);
+ if (err) {
+ pr_err("unable to set initrd-start: %d\n", err);
+ return err;
+ }
+
+ err = fdt_setprop_u32(fdt, node, "linux,initrd-end", start + size);
+ if (err) {
+ pr_err("unable to set initrd-end: %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static const struct mips_fdt_fixup realtek_fdt_fixups[] __initconst = {
+ { realtek_add_initrd, "add initrd" },
+ {},
+};
+
+static __init const void *realtek_fixup_fdt(const void *fdt, const void *match_data)
+{
+ static unsigned char fdt_buf[16 << 10] __initdata;
+ int err;
+
+ if (fdt_check_header(fdt))
+ panic("Corrupt DT");
+
+ fw_init_cmdline();
+
+ err = apply_mips_fdt_fixups(fdt_buf, sizeof(fdt_buf), fdt, realtek_fdt_fixups);
+ if (err)
+ panic("Unable to fixup FDT: %d", err);
+
+ return fdt_buf;
+
+}
+
+static const struct of_device_id realtek_of_match[] __initconst = {
+ { .compatible = "realtek,rtl9302-soc" },
+ {}
+};
+
+MIPS_MACHINE(realtek) = {
+ .matches = realtek_of_match,
+ .fixup_fdt = realtek_fixup_fdt,
+};