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author | Max Filippov | 2019-01-26 13:17:31 +0100 |
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committer | Max Filippov | 2019-01-28 20:55:20 +0100 |
commit | 1acd90bff27eb1f060a7243acb771f444e61d205 (patch) | |
tree | e5efbc04f6dfaf918b95fc12e22fa1c7f9b38924 /hw | |
parent | target/xtensa: add MX interrupt controller (diff) | |
download | qemu-1acd90bff27eb1f060a7243acb771f444e61d205.tar.gz qemu-1acd90bff27eb1f060a7243acb771f444e61d205.tar.xz qemu-1acd90bff27eb1f060a7243acb771f444e61d205.zip |
hw/xtensa: xtfpga: use MX PIC for SMP
Create and use MX PIC as a peripheral interrupt controller when more
than 1 processor is enabled on xtfpga board. Connect xtensa CPU cores to
the MX PIC and select secondary reset vector on all cores except the
first one.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/xtensa/xtfpga.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/hw/xtensa/xtfpga.c b/hw/xtensa/xtfpga.c index 3102f8c047..792a225e03 100644 --- a/hw/xtensa/xtfpga.c +++ b/hw/xtensa/xtfpga.c @@ -45,6 +45,7 @@ #include "qemu/option.h" #include "bootparam.h" #include "xtensa_memory.h" +#include "hw/xtensa/mx_pic.h" typedef struct XtfpgaFlashDesc { hwaddr base; @@ -225,6 +226,7 @@ static void xtfpga_init(const XtfpgaBoardDesc *board, MachineState *machine) XtensaCPU *cpu = NULL; CPUXtensaState *env = NULL; MemoryRegion *system_io; + XtensaMxPic *mx_pic = NULL; qemu_irq *extints; DriveInfo *dinfo; pflash_t *flash = NULL; @@ -237,6 +239,10 @@ static void xtfpga_init(const XtfpgaBoardDesc *board, MachineState *machine) uint32_t freq = 10000000; int n; + if (smp_cpus > 1) { + mx_pic = xtensa_mx_pic_init(31); + qemu_register_reset(xtensa_mx_pic_reset, mx_pic); + } for (n = 0; n < smp_cpus; n++) { CPUXtensaState *cenv = NULL; @@ -247,14 +253,28 @@ static void xtfpga_init(const XtfpgaBoardDesc *board, MachineState *machine) freq = env->config->clock_freq_khz * 1000; } + if (mx_pic) { + MemoryRegion *mx_eri; + + mx_eri = xtensa_mx_pic_register_cpu(mx_pic, + xtensa_get_extints(cenv), + xtensa_get_runstall(cenv)); + memory_region_add_subregion(xtensa_get_er_region(cenv), + 0, mx_eri); + } cenv->sregs[PRID] = n; + xtensa_select_static_vectors(cenv, n != 0); qemu_register_reset(xtfpga_reset, cpu); /* Need MMU initialized prior to ELF loading, * so that ELF gets loaded into virtual addresses */ cpu_reset(CPU(cpu)); } - extints = xtensa_get_extints(env); + if (smp_cpus > 1) { + extints = xtensa_mx_pic_get_extints(mx_pic); + } else { + extints = xtensa_get_extints(env); + } if (env) { XtensaMemory sysram = env->config->sysram; |