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ARM: Exynos4210: Drop gic_cpu_write() after initialization. 

Remove gic_cpu_write() call after initialization that was emulating
functionality of earliest SOC bootloader which enables external
GIC CPU1 interface. Instead introduce Exynos4210-specific secondary
CPU bootloader, which enables both Internal and External GIC CPU1
interfaces.

Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Evgeny Voevodin 2012-04-13 11:39:06 +00:00 committed by Peter Maydell
parent b85f62d781
commit 3f088e36de
4 changed files with 34 additions and 2 deletions
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30
hw/exynos4210.c
View File

@ -25,6 +25,7 @@
#include "sysemu.h"
#include "sysbus.h"
#include "arm-misc.h"
#include "loader.h"
#include "exynos4210.h"
#define EXYNOS4210_CHIPID_ADDR 0x10000000
@ -64,6 +65,35 @@
static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,
0x09, 0x00, 0x00, 0x00 };
void exynos4210_write_secondary(CPUARMState *env,
const struct arm_boot_info *info)
{
int n;
uint32_t smpboot[] = {
0xe59f3024, /* ldr r3, External gic_cpu_if */
0xe59f2024, /* ldr r2, Internal gic_cpu_if */
0xe59f0024, /* ldr r0, startaddr */
0xe3a01001, /* mov r1, #1 */
0xe5821000, /* str r1, [r2] */
0xe5831000, /* str r1, [r3] */
0xe320f003, /* wfi */
0xe5901000, /* ldr r1, [r0] */
0xe1110001, /* tst r1, r1 */
0x0afffffb, /* beq <wfi> */
0xe12fff11, /* bx r1 */
EXYNOS4210_EXT_GIC_CPU_BASE_ADDR,
0, /* gic_cpu_if: base address of Internal GIC CPU interface */
0 /* bootreg: Boot register address is held here */
};
smpboot[ARRAY_SIZE(smpboot) - 1] = info->smp_bootreg_addr;
smpboot[ARRAY_SIZE(smpboot) - 2] = info->gic_cpu_if_addr;
for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
smpboot[n] = tswap32(smpboot[n]);
}
rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot),
info->smp_loader_start);
}
Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
unsigned long ram_size)
{

3
hw/exynos4210.h
View File

@ -97,6 +97,9 @@ typedef struct Exynos4210State {
MemoryRegion bootreg_mem;
} Exynos4210State;
void exynos4210_write_secondary(CPUARMState *env,
const struct arm_boot_info *info);
Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
unsigned long ram_size);

2
hw/exynos4210_gic.c
View File

@ -321,8 +321,6 @@ static int exynos4210_gic_init(SysBusDevice *dev)
sysbus_init_mmio(dev, &s->cpu_container);
sysbus_init_mmio(dev, &s->dist_container);
gic_cpu_write(&s->gic, 1, 0, 1);
return 0;
}

1
hw/exynos4_boards.c
View File

@ -70,6 +70,7 @@ static struct arm_boot_info exynos4_board_binfo = {
.loader_start = EXYNOS4210_BASE_BOOT_ADDR,
.smp_loader_start = EXYNOS4210_SMP_BOOT_ADDR,
.nb_cpus = EXYNOS4210_NCPUS,
.write_secondary_boot = exynos4210_write_secondary,
};
static QEMUMachine exynos4_machines[EXYNOS4_NUM_OF_BOARDS];