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>
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@ -25,6 +25,7 @@
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#include "sysemu.h"
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#include "sysbus.h"
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#include "arm-misc.h"
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#include "loader.h"
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#include "exynos4210.h"
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#define EXYNOS4210_CHIPID_ADDR 0x10000000
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@ -64,6 +65,35 @@
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static uint8_t chipid_and_omr[] = { 0x11, 0x02, 0x21, 0x43,
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0x09, 0x00, 0x00, 0x00 };
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void exynos4210_write_secondary(CPUARMState *env,
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const struct arm_boot_info *info)
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{
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int n;
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uint32_t smpboot[] = {
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0xe59f3024, /* ldr r3, External gic_cpu_if */
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0xe59f2024, /* ldr r2, Internal gic_cpu_if */
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0xe59f0024, /* ldr r0, startaddr */
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0xe3a01001, /* mov r1, #1 */
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0xe5821000, /* str r1, [r2] */
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0xe5831000, /* str r1, [r3] */
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0xe320f003, /* wfi */
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0xe5901000, /* ldr r1, [r0] */
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0xe1110001, /* tst r1, r1 */
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0x0afffffb, /* beq <wfi> */
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0xe12fff11, /* bx r1 */
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EXYNOS4210_EXT_GIC_CPU_BASE_ADDR,
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0, /* gic_cpu_if: base address of Internal GIC CPU interface */
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0 /* bootreg: Boot register address is held here */
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};
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smpboot[ARRAY_SIZE(smpboot) - 1] = info->smp_bootreg_addr;
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smpboot[ARRAY_SIZE(smpboot) - 2] = info->gic_cpu_if_addr;
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for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
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smpboot[n] = tswap32(smpboot[n]);
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}
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rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot),
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info->smp_loader_start);
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}
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Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
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unsigned long ram_size)
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{
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@ -97,6 +97,9 @@ typedef struct Exynos4210State {
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MemoryRegion bootreg_mem;
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} Exynos4210State;
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void exynos4210_write_secondary(CPUARMState *env,
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const struct arm_boot_info *info);
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Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
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unsigned long ram_size);
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@ -321,8 +321,6 @@ static int exynos4210_gic_init(SysBusDevice *dev)
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sysbus_init_mmio(dev, &s->cpu_container);
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sysbus_init_mmio(dev, &s->dist_container);
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gic_cpu_write(&s->gic, 1, 0, 1);
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return 0;
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}
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@ -70,6 +70,7 @@ static struct arm_boot_info exynos4_board_binfo = {
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.loader_start = EXYNOS4210_BASE_BOOT_ADDR,
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.smp_loader_start = EXYNOS4210_SMP_BOOT_ADDR,
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.nb_cpus = EXYNOS4210_NCPUS,
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.write_secondary_boot = exynos4210_write_secondary,
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};
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static QEMUMachine exynos4_machines[EXYNOS4_NUM_OF_BOARDS];
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