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q800: fix I/O memory map

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Linux kernel 5.4 will introduce a new memory map for SWIM device.
(aee6bff1c325 ("m68k: mac: Revisit floppy disc controller base addresses"))

Until this release all MMIO are mapped between 0x50f00000 and 0x50f40000,
but it appears that for real hardware 0x50f00000 is not the base address:
the MMIO region spans 0x50000000 through 0x60000000, and 0x50040000 through
0x54000000 is repeated images of 0x50000000 to 0x50040000.

Fixed: 04e7ca8d0f ("hw/m68k: define Macintosh Quadra 800")
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191104101513.29518-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Laurent Vivier 2019-11-04 11:15:13 +01:00
parent b7c9a7f353
commit 653901ca2b
1 changed files with 32 additions and 8 deletions
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40
hw/m68k/q800.c
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@ -60,14 +60,19 @@
#define MACH_MAC 3
#define Q800_MAC_CPU_ID 2
#define VIA_BASE 0x50f00000
#define SONIC_PROM_BASE 0x50f08000
#define SONIC_BASE 0x50f0a000
#define SCC_BASE 0x50f0c020
#define ESP_BASE 0x50f10000
#define ESP_PDMA 0x50f10100
#define ASC_BASE 0x50F14000
#define SWIM_BASE 0x50F1E000
#define IO_BASE 0x50000000
#define IO_SLICE 0x00040000
#define IO_SIZE 0x04000000
#define VIA_BASE (IO_BASE + 0x00000)
#define SONIC_PROM_BASE (IO_BASE + 0x08000)
#define SONIC_BASE (IO_BASE + 0x0a000)
#define SCC_BASE (IO_BASE + 0x0c020)
#define ESP_BASE (IO_BASE + 0x10000)
#define ESP_PDMA (IO_BASE + 0x10100)
#define ASC_BASE (IO_BASE + 0x14000)
#define SWIM_BASE (IO_BASE + 0x1E000)
#define NUBUS_SUPER_SLOT_BASE 0x60000000
#define NUBUS_SLOT_BASE 0xf0000000
@ -135,6 +140,9 @@ static void q800_init(MachineState *machine)
int32_t initrd_size;
MemoryRegion *rom;
MemoryRegion *ram;
MemoryRegion *io;
const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1;
int i;
ram_addr_t ram_size = machine->ram_size;
const char *kernel_filename = machine->kernel_filename;
const char *initrd_filename = machine->initrd_filename;
@ -163,10 +171,26 @@ static void q800_init(MachineState *machine)
cpu = M68K_CPU(cpu_create(machine->cpu_type));
qemu_register_reset(main_cpu_reset, cpu);
/* RAM */
ram = g_malloc(sizeof(*ram));
memory_region_init_ram(ram, NULL, "m68k_mac.ram", ram_size, &error_abort);
memory_region_add_subregion(get_system_memory(), 0, ram);
/*
* Memory from IO_BASE to IO_BASE + IO_SLICE is repeated
* from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE
*/
io = g_new(MemoryRegion, io_slice_nb);
for (i = 0; i < io_slice_nb; i++) {
char *name = g_strdup_printf("mac_m68k.io[%d]", i + 1);
memory_region_init_alias(&io[i], NULL, name, get_system_memory(),
IO_BASE, IO_SLICE);
memory_region_add_subregion(get_system_memory(),
IO_BASE + (i + 1) * IO_SLICE, &io[i]);
g_free(name);
}
/* IRQ Glue */
irq = g_new0(GLUEState, 1);