diff options
author | Angelo Dureghello <angelo@kernel-space.org> | 2024-03-09 10:34:59 +0100 |
---|---|---|
committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-03-09 19:17:01 +0100 |
commit | d3c79c397484ad117063702e6246e39f22f020f6 (patch) | |
tree | 87b90a8662e66c3957f24d94de1370a3df267066 | |
parent | bb829cdeffd68195259e7efeb9eb47f8b93c1aab (diff) | |
download | qemu-d3c79c397484ad117063702e6246e39f22f020f6.zip qemu-d3c79c397484ad117063702e6246e39f22f020f6.tar.gz qemu-d3c79c397484ad117063702e6246e39f22f020f6.tar.bz2 |
hw/m68k/mcf5208: add support for reset
Add reset support for mcf5208.
Signed-off-by: Angelo Dureghello <angelo@kernel-space.org>
Reviewed-by: Thomas Huth <huth@tuxfamily.org>
Message-ID: <20240309093459.984565-1-angelo@kernel-space.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
-rw-r--r-- | hw/m68k/mcf5208.c | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/hw/m68k/mcf5208.c b/hw/m68k/mcf5208.c index 0cfb806..ec14096 100644 --- a/hw/m68k/mcf5208.c +++ b/hw/m68k/mcf5208.c @@ -40,6 +40,8 @@ #define PCSR_PRE_SHIFT 8 #define PCSR_PRE_MASK 0x0f00 +#define RCR_SOFTRST 0x80 + typedef struct { MemoryRegion iomem; qemu_irq irq; @@ -185,12 +187,50 @@ static const MemoryRegionOps m5208_sys_ops = { .endianness = DEVICE_NATIVE_ENDIAN, }; -static void mcf5208_sys_init(MemoryRegion *address_space, qemu_irq *pic) +static uint64_t m5208_rcm_read(void *opaque, hwaddr addr, + unsigned size) +{ + return 0; +} + +static void m5208_rcm_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size) +{ + M68kCPU *cpu = opaque; + CPUState *cs = CPU(cpu); + switch (addr) { + case 0x0: /* RCR */ + if (value & RCR_SOFTRST) { + cpu_reset(cs); + cpu->env.aregs[7] = ldl_phys(cs->as, 0); + cpu->env.pc = ldl_phys(cs->as, 4); + } + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n", + __func__, addr); + break; + } +} + +static const MemoryRegionOps m5208_rcm_ops = { + .read = m5208_rcm_read, + .write = m5208_rcm_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void mcf5208_sys_init(MemoryRegion *address_space, qemu_irq *pic, + M68kCPU *cpu) { MemoryRegion *iomem = g_new(MemoryRegion, 1); + MemoryRegion *iomem_rcm = g_new(MemoryRegion, 1); m5208_timer_state *s; int i; + /* RCM */ + memory_region_init_io(iomem_rcm, NULL, &m5208_rcm_ops, cpu, + "m5208-rcm", 0x00000080); + memory_region_add_subregion(address_space, 0xfc0a0000, iomem_rcm); /* SDRAMC. */ memory_region_init_io(iomem, NULL, &m5208_sys_ops, NULL, "m5208-sys", 0x00004000); memory_region_add_subregion(address_space, 0xfc0a8000, iomem); @@ -265,7 +305,7 @@ static void mcf5208evb_init(MachineState *machine) mcf_uart_create_mmap(0xfc064000, pic[27], serial_hd(1)); mcf_uart_create_mmap(0xfc068000, pic[28], serial_hd(2)); - mcf5208_sys_init(address_space_mem, pic); + mcf5208_sys_init(address_space_mem, pic, cpu); mcf_fec_init(address_space_mem, 0xfc030000, pic + 36); |