From c4cb2578b5d68716b6644edd69d25a1457607053 Mon Sep 17 00:00:00 2001 From: "Edgar E. Iglesias" Date: Mon, 29 Aug 2011 23:07:41 +0200 Subject: mips: Add SMP support to the Malta board No change to the CPU kinds, so SMP will only work if manually changing the cpu to 34Kf: -cpu 34Kf -smp 2 Signed-off-by: Edgar E. Iglesias --- hw/mips_malta.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/hw/mips_malta.c b/hw/mips_malta.c index 86a8ba07d3..a0adb566ab 100644 --- a/hw/mips_malta.c +++ b/hw/mips_malta.c @@ -732,6 +732,12 @@ static int64_t load_kernel (void) return kernel_entry; } +static void malta_mips_config(CPUState *env) +{ + env->mvp->CP0_MVPConf0 |= ((smp_cpus - 1) << CP0MVPC0_PVPE) | + ((smp_cpus * env->nr_threads - 1) << CP0MVPC0_PTC); +} + static void main_cpu_reset(void *opaque) { CPUState *env = opaque; @@ -743,6 +749,8 @@ static void main_cpu_reset(void *opaque) if (loaderparams.kernel_filename) { env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); } + + malta_mips_config(env); } static void cpu_request_exit(void *opaque, int irq, int level) @@ -796,12 +804,19 @@ void mips_malta_init (ram_addr_t ram_size, cpu_model = "24Kf"; #endif } - env = cpu_init(cpu_model); - if (!env) { - fprintf(stderr, "Unable to find CPU definition\n"); - exit(1); + + for (i = 0; i < smp_cpus; i++) { + env = cpu_init(cpu_model); + if (!env) { + fprintf(stderr, "Unable to find CPU definition\n"); + exit(1); + } + /* Init internal devices */ + cpu_mips_irq_init_cpu(env); + cpu_mips_clock_init(env); + qemu_register_reset(main_cpu_reset, env); } - qemu_register_reset(main_cpu_reset, env); + env = first_cpu; /* allocate RAM */ if (ram_size > (256 << 20)) { @@ -955,6 +970,7 @@ static QEMUMachine mips_malta_machine = { .name = "malta", .desc = "MIPS Malta Core LV", .init = mips_malta_init, + .max_cpus = 16, .is_default = 1, }; -- cgit v1.2.1