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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/kernel/prom.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/mips/kernel/prom.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c new file mode 100644 index 000000000..f88ce78e1 --- /dev/null +++ b/arch/mips/kernel/prom.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * MIPS support for CONFIG_OF device tree support + * + * Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com> + */ + +#include <linux/init.h> +#include <linux/export.h> +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/memblock.h> +#include <linux/debugfs.h> +#include <linux/of.h> +#include <linux/of_fdt.h> +#include <linux/of_platform.h> + +#include <asm/bootinfo.h> +#include <asm/page.h> +#include <asm/prom.h> + +static char mips_machine_name[64] = "Unknown"; + +__init void mips_set_machine_name(const char *name) +{ + if (name == NULL) + return; + + strscpy(mips_machine_name, name, sizeof(mips_machine_name)); + pr_info("MIPS: machine is %s\n", mips_get_machine_name()); +} + +char *mips_get_machine_name(void) +{ + return mips_machine_name; +} + +#ifdef CONFIG_USE_OF + +void __init __dt_setup_arch(void *bph) +{ + if (!early_init_dt_scan(bph)) + return; + + mips_set_machine_name(of_flat_dt_get_machine_name()); +} + +int __init __dt_register_buses(const char *bus0, const char *bus1) +{ + static struct of_device_id of_ids[3]; + + if (!of_have_populated_dt()) + panic("device tree not present"); + + strscpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible)); + if (bus1) { + strscpy(of_ids[1].compatible, bus1, + sizeof(of_ids[1].compatible)); + } + + if (of_platform_populate(NULL, of_ids, NULL, NULL)) + panic("failed to populate DT"); + + return 0; +} + +void __weak __init device_tree_init(void) +{ + unflatten_and_copy_device_tree(); +} + +#endif |