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hw/arm/vexpress: Add alias for flash at address 0 on A15 board 

The A15 Versatile Express board can remap a variety of things at address
0. We don't currently emulate the Serial Configuration Controller which
is how the guest can control this remapping, but we can provide the
initial default mapping of the first flash device into this space.
In particular this allows QEMU to boot flash images such as UEFI which
expect to include an exception vector table.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Grant Likely <grant.likely@linaro.org>
Message-id: 1373374180-19884-1-git-send-email-peter.maydell@linaro.org
master
Peter Maydell 2013-07-09 13:49:40 +01:00
parent 7648673636
commit 8941d6ce25
1 changed files with 17 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
hw/arm/vexpress.c
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@ -67,6 +67,7 @@ enum {
VE_CLCD,
VE_NORFLASH0,
VE_NORFLASH1,
VE_NORFLASHALIAS,
VE_SRAM,
VE_VIDEORAM,
VE_ETHERNET,
@ -104,9 +105,11 @@ static hwaddr motherboard_legacy_map[] = {
[VE_VIDEORAM] = 0x4c000000,
[VE_ETHERNET] = 0x4e000000,
[VE_USB] = 0x4f000000,
[VE_NORFLASHALIAS] = -1, /* not present */
};
static hwaddr motherboard_aseries_map[] = {
[VE_NORFLASHALIAS] = 0,
/* CS0: 0x08000000 .. 0x0c000000 */
[VE_NORFLASH0] = 0x08000000,
/* CS4: 0x0c000000 .. 0x10000000 */
@ -400,10 +403,13 @@ static void vexpress_common_init(const VEDBoardInfo *daughterboard,
qemu_irq pic[64];
uint32_t sys_id;
DriveInfo *dinfo;
pflash_t *pflash0;
ram_addr_t vram_size, sram_size;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *vram = g_new(MemoryRegion, 1);
MemoryRegion *sram = g_new(MemoryRegion, 1);
MemoryRegion *flashalias = g_new(MemoryRegion, 1);
MemoryRegion *flash0mem;
const hwaddr *map = daughterboard->motherboard_map;
int i;
@ -471,15 +477,24 @@ static void vexpress_common_init(const VEDBoardInfo *daughterboard,
sysbus_create_simple("pl111", map[VE_CLCD], pic[14]);
dinfo = drive_get_next(IF_PFLASH);
if (!pflash_cfi01_register(map[VE_NORFLASH0], NULL, "vexpress.flash0",
pflash0 = pflash_cfi01_register(map[VE_NORFLASH0], NULL, "vexpress.flash0",
VEXPRESS_FLASH_SIZE, dinfo ? dinfo->bdrv : NULL,
VEXPRESS_FLASH_SECT_SIZE,
VEXPRESS_FLASH_SIZE / VEXPRESS_FLASH_SECT_SIZE, 4,
0x00, 0x89, 0x00, 0x18, 0)) {
0x00, 0x89, 0x00, 0x18, 0);
if (!pflash0) {
fprintf(stderr, "vexpress: error registering flash 0.\n");
exit(1);
}
if (map[VE_NORFLASHALIAS] != -1) {
/* Map flash 0 as an alias into low memory */
flash0mem = sysbus_mmio_get_region(SYS_BUS_DEVICE(pflash0), 0);
memory_region_init_alias(flashalias, NULL, "vexpress.flashalias",
flash0mem, 0, VEXPRESS_FLASH_SIZE);
memory_region_add_subregion(sysmem, map[VE_NORFLASHALIAS], flashalias);
}
dinfo = drive_get_next(IF_PFLASH);
if (!pflash_cfi01_register(map[VE_NORFLASH1], NULL, "vexpress.flash1",
VEXPRESS_FLASH_SIZE, dinfo ? dinfo->bdrv : NULL,