diff options
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/Makefile | 4 | ||||
| -rw-r--r-- | arch/mips/kernel/asm-offsets.c | 66 | ||||
| -rw-r--r-- | arch/mips/kernel/binfmt_elfo32.c | 4 | ||||
| -rw-r--r-- | arch/mips/kernel/cevt-r4k.c | 4 | ||||
| -rw-r--r-- | arch/mips/kernel/mips_machine.c | 22 | ||||
| -rw-r--r-- | arch/mips/kernel/proc.c | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/prom.c | 33 | ||||
| -rw-r--r-- | arch/mips/kernel/setup.c | 22 | ||||
| -rw-r--r-- | arch/mips/kernel/smp.c | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/traps.c | 20 |
10 files changed, 146 insertions, 32 deletions
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 3d95062173c..cb96ace5c8c 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -5,7 +5,7 @@ extra-y := head.o vmlinux.lds obj-y += cpu-probe.o branch.o entry.o genex.o irq.o process.o \ - ptrace.o reset.o setup.o signal.o syscall.o \ + prom.o ptrace.o reset.o setup.o signal.o syscall.o \ time.o topology.o traps.o unaligned.o watch.o vdso.o ifdef CONFIG_FUNCTION_TRACER @@ -87,8 +87,6 @@ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o obj-$(CONFIG_SPINLOCK_TEST) += spinlock_test.o obj-$(CONFIG_MIPS_MACHINE) += mips_machine.o -obj-$(CONFIG_OF) += prom.o - CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -x c /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi) obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT) += 8250-platform.o diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c index 50285b2c7ff..0845091ba48 100644 --- a/arch/mips/kernel/asm-offsets.c +++ b/arch/mips/kernel/asm-offsets.c @@ -17,6 +17,8 @@ #include <asm/ptrace.h> #include <asm/processor.h> +#include <linux/kvm_host.h> + void output_ptreg_defines(void) { COMMENT("MIPS pt_regs offsets."); @@ -328,3 +330,67 @@ void output_pbe_defines(void) BLANK(); } #endif + +void output_kvm_defines(void) +{ + COMMENT(" KVM/MIPS Specfic offsets. "); + DEFINE(VCPU_ARCH_SIZE, sizeof(struct kvm_vcpu_arch)); + OFFSET(VCPU_RUN, kvm_vcpu, run); + OFFSET(VCPU_HOST_ARCH, kvm_vcpu, arch); + + OFFSET(VCPU_HOST_EBASE, kvm_vcpu_arch, host_ebase); + OFFSET(VCPU_GUEST_EBASE, kvm_vcpu_arch, guest_ebase); + + OFFSET(VCPU_HOST_STACK, kvm_vcpu_arch, host_stack); + OFFSET(VCPU_HOST_GP, kvm_vcpu_arch, host_gp); + + OFFSET(VCPU_HOST_CP0_BADVADDR, kvm_vcpu_arch, host_cp0_badvaddr); + OFFSET(VCPU_HOST_CP0_CAUSE, kvm_vcpu_arch, host_cp0_cause); + OFFSET(VCPU_HOST_EPC, kvm_vcpu_arch, host_cp0_epc); + OFFSET(VCPU_HOST_ENTRYHI, kvm_vcpu_arch, host_cp0_entryhi); + + OFFSET(VCPU_GUEST_INST, kvm_vcpu_arch, guest_inst); + + OFFSET(VCPU_R0, kvm_vcpu_arch, gprs[0]); + OFFSET(VCPU_R1, kvm_vcpu_arch, gprs[1]); + OFFSET(VCPU_R2, kvm_vcpu_arch, gprs[2]); + OFFSET(VCPU_R3, kvm_vcpu_arch, gprs[3]); + OFFSET(VCPU_R4, kvm_vcpu_arch, gprs[4]); + OFFSET(VCPU_R5, kvm_vcpu_arch, gprs[5]); + OFFSET(VCPU_R6, kvm_vcpu_arch, gprs[6]); + OFFSET(VCPU_R7, kvm_vcpu_arch, gprs[7]); + OFFSET(VCPU_R8, kvm_vcpu_arch, gprs[8]); + OFFSET(VCPU_R9, kvm_vcpu_arch, gprs[9]); + OFFSET(VCPU_R10, kvm_vcpu_arch, gprs[10]); + OFFSET(VCPU_R11, kvm_vcpu_arch, gprs[11]); + OFFSET(VCPU_R12, kvm_vcpu_arch, gprs[12]); + OFFSET(VCPU_R13, kvm_vcpu_arch, gprs[13]); + OFFSET(VCPU_R14, kvm_vcpu_arch, gprs[14]); + OFFSET(VCPU_R15, kvm_vcpu_arch, gprs[15]); + OFFSET(VCPU_R16, kvm_vcpu_arch, gprs[16]); + OFFSET(VCPU_R17, kvm_vcpu_arch, gprs[17]); + OFFSET(VCPU_R18, kvm_vcpu_arch, gprs[18]); + OFFSET(VCPU_R19, kvm_vcpu_arch, gprs[19]); + OFFSET(VCPU_R20, kvm_vcpu_arch, gprs[20]); + OFFSET(VCPU_R21, kvm_vcpu_arch, gprs[21]); + OFFSET(VCPU_R22, kvm_vcpu_arch, gprs[22]); + OFFSET(VCPU_R23, kvm_vcpu_arch, gprs[23]); + OFFSET(VCPU_R24, kvm_vcpu_arch, gprs[24]); + OFFSET(VCPU_R25, kvm_vcpu_arch, gprs[25]); + OFFSET(VCPU_R26, kvm_vcpu_arch, gprs[26]); + OFFSET(VCPU_R27, kvm_vcpu_arch, gprs[27]); + OFFSET(VCPU_R28, kvm_vcpu_arch, gprs[28]); + OFFSET(VCPU_R29, kvm_vcpu_arch, gprs[29]); + OFFSET(VCPU_R30, kvm_vcpu_arch, gprs[30]); + OFFSET(VCPU_R31, kvm_vcpu_arch, gprs[31]); + OFFSET(VCPU_LO, kvm_vcpu_arch, lo); + OFFSET(VCPU_HI, kvm_vcpu_arch, hi); + OFFSET(VCPU_PC, kvm_vcpu_arch, pc); + OFFSET(VCPU_COP0, kvm_vcpu_arch, cop0); + OFFSET(VCPU_GUEST_KERNEL_ASID, kvm_vcpu_arch, guest_kernel_asid); + OFFSET(VCPU_GUEST_USER_ASID, kvm_vcpu_arch, guest_user_asid); + + OFFSET(COP0_TLB_HI, mips_coproc, reg[MIPS_CP0_TLB_HI][0]); + OFFSET(COP0_STATUS, mips_coproc, reg[MIPS_CP0_STATUS][0]); + BLANK(); +} diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c index 556a4357d7f..97c5a1668e5 100644 --- a/arch/mips/kernel/binfmt_elfo32.c +++ b/arch/mips/kernel/binfmt_elfo32.c @@ -48,7 +48,11 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; __res; \ }) +#ifdef CONFIG_KVM_GUEST +#define TASK32_SIZE 0x3fff8000UL +#else #define TASK32_SIZE 0x7fff8000UL +#endif #undef ELF_ET_DYN_BASE #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c index 0613f468f1a..02033eaf882 100644 --- a/arch/mips/kernel/cevt-r4k.c +++ b/arch/mips/kernel/cevt-r4k.c @@ -119,6 +119,10 @@ int c0_compare_int_usable(void) unsigned int delta; unsigned int cnt; +#ifdef CONFIG_KVM_GUEST + return 1; +#endif + /* * IP7 already pending? Try to clear it by acking the timer. */ diff --git a/arch/mips/kernel/mips_machine.c b/arch/mips/kernel/mips_machine.c index 411a058d2c5..87609752969 100644 --- a/arch/mips/kernel/mips_machine.c +++ b/arch/mips/kernel/mips_machine.c @@ -11,9 +11,9 @@ #include <linux/slab.h> #include <asm/mips_machine.h> +#include <asm/prom.h> static struct mips_machine *mips_machine __initdata; -static char *mips_machine_name = "Unknown"; #define for_each_machine(mach) \ for ((mach) = (struct mips_machine *)&__mips_machines_start; \ @@ -21,25 +21,6 @@ static char *mips_machine_name = "Unknown"; (unsigned long)(mach) < (unsigned long)&__mips_machines_end; \ (mach)++) -__init void mips_set_machine_name(const char *name) -{ - char *p; - - if (name == NULL) - return; - - p = kstrdup(name, GFP_KERNEL); - if (!p) - pr_err("MIPS: no memory for machine_name\n"); - - mips_machine_name = p; -} - -char *mips_get_machine_name(void) -{ - return mips_machine_name; -} - __init int mips_machtype_setup(char *id) { struct mips_machine *mach; @@ -79,7 +60,6 @@ __init void mips_machine_setup(void) return; mips_set_machine_name(mips_machine->mach_name); - pr_info("MIPS: machine is %s\n", mips_machine_name); if (mips_machine->mach_setup) mips_machine->mach_setup(); diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c index 26b19daa179..a3e461408b7 100644 --- a/arch/mips/kernel/proc.c +++ b/arch/mips/kernel/proc.c @@ -12,7 +12,7 @@ #include <asm/cpu-features.h> #include <asm/mipsregs.h> #include <asm/processor.h> -#include <asm/mips_machine.h> +#include <asm/prom.h> unsigned int vced_count, vcei_count; diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c index 028f6f837ef..5712bb53224 100644 --- a/arch/mips/kernel/prom.c +++ b/arch/mips/kernel/prom.c @@ -23,6 +23,23 @@ #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; + + strncpy(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_OF int __init early_init_dt_scan_memory_arch(unsigned long node, const char *uname, int depth, void *data) @@ -50,6 +67,18 @@ void __init early_init_dt_setup_initrd_arch(unsigned long start, } #endif +int __init early_init_dt_scan_model(unsigned long node, const char *uname, + int depth, void *data) +{ + if (!depth) { + char *model = of_get_flat_dt_prop(node, "model", NULL); + + if (model) + mips_set_machine_name(model); + } + return 0; +} + void __init early_init_devtree(void *params) { /* Setup flat device-tree pointer */ @@ -65,6 +94,9 @@ void __init early_init_devtree(void *params) /* Scan memory nodes */ of_scan_flat_dt(early_init_dt_scan_root, NULL); of_scan_flat_dt(early_init_dt_scan_memory_arch, NULL); + + /* try to load the mips machine name */ + of_scan_flat_dt(early_init_dt_scan_model, NULL); } void __init __dt_setup_arch(struct boot_param_header *bph) @@ -79,3 +111,4 @@ void __init __dt_setup_arch(struct boot_param_header *bph) early_init_devtree(initial_boot_params); } +#endif diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 4c774d5d508..c7f90519e58 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -23,6 +23,7 @@ #include <linux/pfn.h> #include <linux/debugfs.h> #include <linux/kexec.h> +#include <linux/sizes.h> #include <asm/addrspace.h> #include <asm/bootinfo.h> @@ -77,6 +78,8 @@ EXPORT_SYMBOL(mips_io_port_base); static struct resource code_resource = { .name = "Kernel code", }; static struct resource data_resource = { .name = "Kernel data", }; +static void *detect_magic __initdata = detect_memory_region; + void __init add_memory_region(phys_t start, phys_t size, long type) { int x = boot_mem_map.nr_map; @@ -122,6 +125,25 @@ void __init add_memory_region(phys_t start, phys_t size, long type) boot_mem_map.nr_map++; } +void __init detect_memory_region(phys_t start, phys_t sz_min, phys_t sz_max) +{ + void *dm = &detect_magic; + phys_t size; + + for (size = sz_min; size < sz_max; size <<= 1) { + if (!memcmp(dm, dm + size, sizeof(detect_magic))) + break; + } + + pr_debug("Memory: %lluMB of RAM detected at 0x%llx (min: %lluMB, max: %lluMB)\n", + ((unsigned long long) size) / SZ_1M, + (unsigned long long) start, + ((unsigned long long) sz_min) / SZ_1M, + ((unsigned long long) sz_max) / SZ_1M); + + add_memory_region(start, size, BOOT_MEM_RAM); +} + static void __init print_memory_map(void) { int i; diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 66bf4e22d9b..596620dd7ee 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -83,6 +83,7 @@ static inline void set_cpu_sibling_map(int cpu) } struct plat_smp_ops *mp_ops; +EXPORT_SYMBOL(mp_ops); __cpuinit void register_smp_ops(struct plat_smp_ops *ops) { diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 571a69c57d8..3c906e723fd 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -60,9 +60,9 @@ extern void check_wait(void); extern asmlinkage void r4k_wait(void); extern asmlinkage void rollback_handle_int(void); extern asmlinkage void handle_int(void); -extern asmlinkage void handle_tlbm(void); -extern asmlinkage void handle_tlbl(void); -extern asmlinkage void handle_tlbs(void); +extern u32 handle_tlbl[]; +extern u32 handle_tlbs[]; +extern u32 handle_tlbm[]; extern asmlinkage void handle_adel(void); extern asmlinkage void handle_ades(void); extern asmlinkage void handle_ibe(void); @@ -1473,7 +1473,7 @@ unsigned long vi_handlers[64]; void __init *set_except_vector(int n, void *addr) { unsigned long handler = (unsigned long) addr; - unsigned long old_handler = exception_handlers[n]; + unsigned long old_handler; #ifdef CONFIG_CPU_MICROMIPS /* @@ -1486,7 +1486,8 @@ void __init *set_except_vector(int n, void *addr) if (!(handler & 0x1)) handler |= 1; #endif - exception_handlers[n] = handler; + old_handler = xchg(&exception_handlers[n], handler); + if (n == 0 && cpu_has_divec) { #ifdef CONFIG_CPU_MICROMIPS unsigned long jump_mask = ~((1 << 27) - 1); @@ -1508,7 +1509,7 @@ void __init *set_except_vector(int n, void *addr) return (void *)old_handler; } -static asmlinkage void do_default_vi(void) +static void do_default_vi(void) { show_regs(get_irq_regs()); panic("Caught unexpected vectored interrupt."); @@ -1841,7 +1842,12 @@ void __init trap_init(void) ebase = (unsigned long) __alloc_bootmem(size, 1 << fls(size), 0); } else { - ebase = CKSEG0; +#ifdef CONFIG_KVM_GUEST +#define KVM_GUEST_KSEG0 0x40000000 + ebase = KVM_GUEST_KSEG0; +#else + ebase = CKSEG0; +#endif if (cpu_has_mips_r2) ebase += (read_c0_ebase() & 0x3ffff000); } |