diff options
| author | Evgeny Voevodin <e.voevodin@samsung.com> | 2012-01-13 20:52:40 +0000 |
|---|---|---|
| committer | Andrzej Zaborowski <andrew.zaborowski@intel.com> | 2012-01-17 02:08:22 +0100 |
| commit | 078758d0741c30d44246383ce5c2ba43281e9aec (patch) | |
| tree | 45cecd4aabc82c94abf341e12f32665a77be57c2 /hw | |
| parent | ea0e68411e3276060999e2e7db569e3009fc3b81 (diff) | |
hw/arm_boot.c: Make SMP boards specify address to poll in bootup loop
The secondary CPU bootloader in arm_boot.c holds secondary CPUs in a
pen until the primary CPU releases them. Make boards specify the
address to be polled to determine whether to leave the pen (it was
previously hardcoded to 0x10000030, which is a Versatile Express/
Realview specific system register address).
Signed-off-by: Evgeny Voevodin <e.voevodin@samsung.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/arm-misc.h | 1 | ||||
| -rw-r--r-- | hw/arm_boot.c | 18 | ||||
| -rw-r--r-- | hw/realview.c | 2 | ||||
| -rw-r--r-- | hw/vexpress.c | 2 |
4 files changed, 15 insertions, 8 deletions
diff --git a/hw/arm-misc.h b/hw/arm-misc.h index af403a159a..6e8ae6b02e 100644 --- a/hw/arm-misc.h +++ b/hw/arm-misc.h @@ -31,6 +31,7 @@ struct arm_boot_info { const char *initrd_filename; target_phys_addr_t loader_start; target_phys_addr_t smp_loader_start; + target_phys_addr_t smp_bootreg_addr; target_phys_addr_t smp_priv_base; int nb_cpus; int board_id; diff --git a/hw/arm_boot.c b/hw/arm_boot.c index 215d5dec64..bf509a8eb9 100644 --- a/hw/arm_boot.c +++ b/hw/arm_boot.c @@ -31,17 +31,17 @@ static uint32_t bootloader[] = { /* Entry point for secondary CPUs. Enable interrupt controller and Issue WFI until start address is written to system controller. */ static uint32_t smpboot[] = { - 0xe59f0020, /* ldr r0, privbase */ - 0xe3a01001, /* mov r1, #1 */ - 0xe5801100, /* str r1, [r0, #0x100] */ - 0xe3a00201, /* mov r0, #0x10000000 */ - 0xe3800030, /* orr r0, #0x30 */ + 0xe59f201c, /* ldr r2, privbase */ + 0xe59f001c, /* ldr r0, startaddr */ + 0xe3a01001, /* mov r1, #1 */ + 0xe5821100, /* str r1, [r2, #256] */ 0xe320f003, /* wfi */ 0xe5901000, /* ldr r1, [r0] */ 0xe1110001, /* tst r1, r1 */ 0x0afffffb, /* beq <wfi> */ 0xe12fff11, /* bx r1 */ - 0 /* privbase: Private memory region base address. */ + 0, /* privbase: Private memory region base address. */ + 0 /* bootreg: Boot register address is held here */ }; #define WRITE_WORD(p, value) do { \ @@ -197,6 +197,7 @@ static void do_cpu_reset(void *opaque) info->loader_start); } } else { + stl_phys_notdirty(info->smp_bootreg_addr, 0); env->regs[15] = info->smp_loader_start; } } @@ -272,8 +273,9 @@ void arm_load_kernel(CPUState *env, struct arm_boot_info *info) rom_add_blob_fixed("bootloader", bootloader, sizeof(bootloader), info->loader_start); if (info->nb_cpus > 1) { - smpboot[10] = info->smp_priv_base; - for (n = 0; n < sizeof(smpboot) / 4; n++) { + smpboot[ARRAY_SIZE(smpboot) - 1] = info->smp_bootreg_addr; + smpboot[ARRAY_SIZE(smpboot) - 2] = info->smp_priv_base; + for (n = 0; n < ARRAY_SIZE(smpboot); n++) { smpboot[n] = tswap32(smpboot[n]); } rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), diff --git a/hw/realview.c b/hw/realview.c index d4191e91c8..3f35118f21 100644 --- a/hw/realview.c +++ b/hw/realview.c @@ -21,6 +21,7 @@ #include "exec-memory.h" #define SMP_BOOT_ADDR 0xe0000000 +#define SMP_BOOTREG_ADDR 0x10000030 typedef struct { SysBusDevice busdev; @@ -96,6 +97,7 @@ static void realview_register_devices(void) static struct arm_boot_info realview_binfo = { .smp_loader_start = SMP_BOOT_ADDR, + .smp_bootreg_addr = SMP_BOOTREG_ADDR, }; /* The following two lists must be consistent. */ diff --git a/hw/vexpress.c b/hw/vexpress.c index 0f39d8da01..71115564e0 100644 --- a/hw/vexpress.c +++ b/hw/vexpress.c @@ -31,11 +31,13 @@ #include "exec-memory.h" #define SMP_BOOT_ADDR 0xe0000000 +#define SMP_BOOTREG_ADDR 0x10000030 #define VEXPRESS_BOARD_ID 0x8e0 static struct arm_boot_info vexpress_binfo = { .smp_loader_start = SMP_BOOT_ADDR, + .smp_bootreg_addr = SMP_BOOTREG_ADDR, }; static void vexpress_a9_init(ram_addr_t ram_size, |