diff options
Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.33')
| -rw-r--r-- | target/linux/generic-2.6/patches-2.6.33/020-mips_multi_machine_support.patch | 170 |
1 files changed, 101 insertions, 69 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.33/020-mips_multi_machine_support.patch b/target/linux/generic-2.6/patches-2.6.33/020-mips_multi_machine_support.patch index 589fa4fbf..1f25b17ef 100644 --- a/target/linux/generic-2.6/patches-2.6.33/020-mips_multi_machine_support.patch +++ b/target/linux/generic-2.6/patches-2.6.33/020-mips_multi_machine_support.patch @@ -1,8 +1,8 @@ --- /dev/null +++ b/arch/mips/include/asm/mips_machine.h -@@ -0,0 +1,47 @@ +@@ -0,0 +1,54 @@ +/* -+ * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> ++ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published @@ -16,43 +16,50 @@ +#include <linux/init.h> +#include <linux/list.h> + ++#include <asm/bootinfo.h> ++ +struct mips_machine { + unsigned long mach_type; ++ const char *mach_id; ++ const char *mach_name; + void (*mach_setup)(void); -+ char *mach_name; -+ struct list_head list; +}; + -+void mips_machine_register(struct mips_machine *) __init; -+void mips_machine_setup(unsigned long machtype) __init; -+void mips_machine_set_name(char *name) __init; -+ -+extern char *mips_machine_name; -+ -+#define MIPS_MACHINE(_type, _name, _setup) \ -+static char machine_name_##_type[] __initdata = _name; \ -+static struct mips_machine machine_##_type __initdata = \ ++#define MIPS_MACHINE(_type, _id, _name, _setup) \ ++static const char machine_name_##_type[] __initconst \ ++ __aligned(1) = _name; \ ++static const char machine_id_##_type[] __initconst \ ++ __aligned(1) = _id; \ ++static struct mips_machine machine_##_type \ ++ __used __section(.mips.machines.init) = \ +{ \ + .mach_type = _type, \ ++ .mach_id = machine_id_##_type, \ + .mach_name = machine_name_##_type, \ + .mach_setup = _setup, \ -+}; \ -+ \ -+static int __init register_machine_##_type(void) \ -+{ \ -+ mips_machine_register(&machine_##_type); \ -+ return 0; \ -+} \ -+ \ -+pure_initcall(register_machine_##_type) ++}; + -+#endif /* __ASM_MIPS_MACHINE_H */ ++extern long __mips_machines_start; ++extern long __mips_machines_end; ++ ++#ifdef CONFIG_MIPS_MACHINE ++int mips_machtype_setup(char *id) __init; ++void mips_machine_setup(void) __init; ++void mips_set_machine_name(const char *name) __init; ++char *mips_get_machine_name(void); ++#else ++static inline int mips_machtype_setup(char *id) { return 1; } ++static inline void mips_machine_setup(void) { } ++static inline void mips_set_machine_name(const char *name) { } ++static inline char *mips_get_machine_name(void) { return NULL; } ++#endif /* CONFIG_MIPS_MACHINE */ + ++#endif /* __ASM_MIPS_MACHINE_H */ --- /dev/null +++ b/arch/mips/kernel/mips_machine.c -@@ -0,0 +1,74 @@ +@@ -0,0 +1,83 @@ +/* -+ * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> ++ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published @@ -60,70 +67,79 @@ + * + */ +#include <linux/mm.h> ++#include <linux/string.h> ++#include <linux/slab.h> + +#include <asm/mips_machine.h> -+#include <asm/bootinfo.h> + -+static struct list_head mips_machines __initdata = -+ LIST_HEAD_INIT(mips_machines); ++static struct mips_machine *mips_machine __initdata; ++static char *mips_machine_name = "Unknown"; + -+char *mips_machine_name = "Unknown"; ++#define for_each_machine(mach) \ ++ for ((mach) = (struct mips_machine *)&__mips_machines_start; \ ++ (mach) && \ ++ (unsigned long)(mach) < (unsigned long)&__mips_machines_end; \ ++ (mach)++) + -+static struct mips_machine * __init mips_machine_find(unsigned long machtype) ++__init void mips_set_machine_name(const char *name) +{ -+ struct list_head *this; ++ char *p; + -+ list_for_each(this, &mips_machines) { -+ struct mips_machine *mach; ++ if (name == NULL) ++ return; + -+ mach = list_entry(this, struct mips_machine, list); -+ if (mach->mach_type == machtype) -+ return mach; -+ } ++ p = kstrdup(name, GFP_KERNEL); ++ if (!p) ++ pr_err("MIPS: no memory for machine_name\n"); + -+ return NULL; ++ mips_machine_name = p; +} + -+void __init mips_machine_register(struct mips_machine *mach) ++char *mips_get_machine_name(void) +{ -+ list_add_tail(&mach->list, &mips_machines); ++ return mips_machine_name; +} + -+void __init mips_machine_set_name(char *name) ++__init int mips_machtype_setup(char *id) +{ -+ unsigned int len; -+ char *p; ++ struct mips_machine *mach; + -+ if (name == NULL) -+ return; ++ for_each_machine(mach) { ++ if (mach->mach_id == NULL) ++ continue; ++ ++ if (strcmp(mach->mach_id, id) == 0) { ++ mips_machine = mach; ++ break; ++ } ++ } + -+ len = strlen(name); -+ p = kmalloc(len + 1, GFP_KERNEL); -+ if (p) { -+ strncpy(p, name, len); -+ p[len] = '\0'; -+ mips_machine_name = p; -+ } else { -+ printk(KERN_WARNING "MIPS: no memory for machine_name\n"); ++ if (!mips_machine) { ++ pr_err("MIPS: no machine found for id '%s', supported machines:\n", ++ id); ++ pr_err("%32s %s\n", "id", "name"); ++ for_each_machine(mach) ++ pr_err("%32s %s\n", mach->mach_id, mach->mach_name); ++ return 1; + } ++ ++ mips_machtype = mips_machine->mach_type; ++ ++ return 0; +} + -+void __init mips_machine_setup(unsigned long machtype) -+{ -+ struct mips_machine *mach; ++__setup("machtype=", mips_machtype_setup); + -+ mach = mips_machine_find(machtype); -+ if (!mach) { -+ printk(KERN_ALERT "MIPS: no machine registered for " -+ "machtype %lu\n", machtype); ++__init void mips_machine_setup(void) ++{ ++ if (!mips_machine) + return; -+ } + -+ mips_machine_set_name(mach->mach_name); -+ printk(KERN_INFO "MIPS: machine is %s\n", mips_machine_name); ++ mips_set_machine_name(mips_machine->mach_name); ++ pr_info("MIPS: machine is %s\n", mips_machine_name); + -+ if (mach->mach_setup) -+ mach->mach_setup(); ++ if (mips_machine->mach_setup) ++ mips_machine->mach_setup(); +} --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -157,17 +173,33 @@ unsigned int vced_count, vcei_count; -@@ -31,8 +32,12 @@ static int show_cpuinfo(struct seq_file +@@ -31,8 +32,12 @@ static int show_cpuinfo(struct seq_file /* * For the first processor also print the system type */ - if (n == 0) + if (n == 0) { seq_printf(m, "system type\t\t: %s\n", get_system_type()); -+#ifdef CONFIG_MIPS_MACHINE -+ seq_printf(m, "machine\t\t\t: %s\n", mips_machine_name); -+#endif ++ if (mips_get_machine_name()) ++ seq_printf(m, "machine\t\t\t: %s\n", ++ mips_get_machine_name()); + } seq_printf(m, "processor\t\t: %ld\n", n); sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n", +--- a/arch/mips/kernel/vmlinux.lds.S ++++ b/arch/mips/kernel/vmlinux.lds.S +@@ -98,6 +98,13 @@ SECTIONS + INIT_TEXT_SECTION(PAGE_SIZE) + INIT_DATA_SECTION(16) + ++ . = ALIGN(4); ++ .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) { ++ __mips_machines_start = .; ++ *(.mips.machines.init) ++ __mips_machines_end = .; ++ } ++ + /* .exit.text is discarded at runtime, not link time, to deal with + * references from .rodata + */ |