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-rw-r--r--arch/powerpc/cpu/mpc85xx/cpu.c9
-rw-r--r--arch/powerpc/cpu/mpc85xx/mp.c27
-rw-r--r--arch/powerpc/cpu/mpc85xx/speed.c7
-rw-r--r--arch/powerpc/cpu/mpc8xxx/cpu.c36
-rw-r--r--arch/powerpc/cpu/mpc8xxx/fdt.c2
-rw-r--r--arch/powerpc/include/asm/processor.h6
-rw-r--r--common/cmd_mp.c5
-rw-r--r--include/common.h15
8 files changed, 78 insertions, 29 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index 22fa4615cb..f51829e0fe 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -64,7 +64,8 @@ int checkcpu (void)
u32 ddr_ratio = 0;
#endif /* CONFIG_FSL_CORENET */
#endif /* CONFIG_DDR_CLK_FREQ */
- int i;
+ unsigned int i, core, nr_cores = cpu_numcores();
+ u32 mask = cpu_mask();
svr = get_svr();
major = SVR_MAJ(svr);
@@ -119,11 +120,11 @@ int checkcpu (void)
get_sys_info(&sysinfo);
puts("Clock Configuration:");
- for (i = 0; i < cpu_numcores(); i++) {
+ for_each_cpu(i, core, nr_cores, mask) {
if (!(i & 3))
printf ("\n ");
- printf("CPU%d:%-4s MHz, ",
- i,strmhz(buf1, sysinfo.freqProcessor[i]));
+ printf("CPU%d:%-4s MHz, ", core,
+ strmhz(buf1, sysinfo.freqProcessor[core]));
}
printf("\n CCB:%-4s MHz,\n", strmhz(buf1, sysinfo.freqSystemBus));
diff --git a/arch/powerpc/cpu/mpc85xx/mp.c b/arch/powerpc/cpu/mpc85xx/mp.c
index 758e6d7045..ffc2a9ad65 100644
--- a/arch/powerpc/cpu/mpc85xx/mp.c
+++ b/arch/powerpc/cpu/mpc85xx/mp.c
@@ -221,14 +221,14 @@ ulong get_spin_virt_addr(void)
#ifdef CONFIG_FSL_CORENET
static void plat_mp_up(unsigned long bootpg)
{
- u32 up, cpu_up_mask, whoami;
+ u32 cpu_up_mask, whoami;
u32 *table = (u32 *)get_spin_virt_addr();
volatile ccsr_gur_t *gur;
volatile ccsr_local_t *ccm;
volatile ccsr_rcpm_t *rcpm;
volatile ccsr_pic_t *pic;
int timeout = 10;
- u32 nr_cpus;
+ u32 mask = cpu_mask();
struct law_entry e;
gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
@@ -236,8 +236,6 @@ static void plat_mp_up(unsigned long bootpg)
rcpm = (void *)(CONFIG_SYS_FSL_CORENET_RCPM_ADDR);
pic = (void *)(CONFIG_SYS_MPC8xxx_PIC_ADDR);
- nr_cpus = ((in_be32(&pic->frr) >> 8) & 0xff) + 1;
-
whoami = in_be32(&pic->whoami);
cpu_up_mask = 1 << whoami;
out_be32(&ccm->bstrl, bootpg);
@@ -251,19 +249,18 @@ static void plat_mp_up(unsigned long bootpg)
/* disable time base at the platform */
out_be32(&rcpm->ctbenrl, cpu_up_mask);
- /* release the hounds */
- up = ((1 << nr_cpus) - 1);
- out_be32(&gur->brrl, up);
+ out_be32(&gur->brrl, mask);
/* wait for everyone */
while (timeout) {
- int i;
- for (i = 0; i < nr_cpus; i++) {
- if (table[i * NUM_BOOT_ENTRY + BOOT_ENTRY_ADDR_LOWER])
- cpu_up_mask |= (1 << i);
- };
+ unsigned int i, cpu, nr_cpus = cpu_numcores();
- if ((cpu_up_mask & up) == up)
+ for_each_cpu(i, cpu, nr_cpus, mask) {
+ if (table[cpu * NUM_BOOT_ENTRY + BOOT_ENTRY_ADDR_LOWER])
+ cpu_up_mask |= (1 << cpu);
+ }
+
+ if ((cpu_up_mask & mask) == mask)
break;
udelay(100);
@@ -272,7 +269,7 @@ static void plat_mp_up(unsigned long bootpg)
if (timeout == 0)
printf("CPU up timeout. CPU up mask is %x should be %x\n",
- cpu_up_mask, up);
+ cpu_up_mask, mask);
/* enable time base at the platform */
out_be32(&rcpm->ctbenrl, 0);
@@ -283,7 +280,7 @@ static void plat_mp_up(unsigned long bootpg)
mtspr(SPRN_TBWU, 0);
mtspr(SPRN_TBWL, 0);
- out_be32(&rcpm->ctbenrl, (1 << nr_cpus) - 1);
+ out_be32(&rcpm->ctbenrl, mask);
#ifdef CONFIG_MPC8xxx_DISABLE_BPTR
/*
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index a83dfeb84c..ce47532455 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -41,6 +41,7 @@ void get_sys_info (sys_info_t * sysInfo)
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#ifdef CONFIG_FSL_CORENET
volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
+ unsigned int cpu;
const u8 core_cplx_PLL[16] = {
[ 0] = 0, /* CC1 PPL / 1 */
@@ -97,11 +98,11 @@ void get_sys_info (sys_info_t * sysInfo)
freqCC_PLL[i] = sysInfo->freqSystemBus * ratio[i];
}
rcw_tmp = in_be32(&gur->rcwsr[3]);
- for (i = 0; i < cpu_numcores(); i++) {
- u32 c_pll_sel = (in_be32(&clk->clkc0csr + i*8) >> 27) & 0xf;
+ for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
+ u32 c_pll_sel = (in_be32(&clk->clkc0csr + cpu*8) >> 27) & 0xf;
u32 cplx_pll = core_cplx_PLL[c_pll_sel];
- sysInfo->freqProcessor[i] =
+ sysInfo->freqProcessor[cpu] =
freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel];
}
diff --git a/arch/powerpc/cpu/mpc8xxx/cpu.c b/arch/powerpc/cpu/mpc8xxx/cpu.c
index 767bc524d1..bb572cfff1 100644
--- a/arch/powerpc/cpu/mpc8xxx/cpu.c
+++ b/arch/powerpc/cpu/mpc8xxx/cpu.c
@@ -129,13 +129,33 @@ struct cpu_type *identify_cpu(u32 ver)
return &cpu_type_unknown;
}
+#define MPC8xxx_PICFRR_NCPU_MASK 0x00001f00
+#define MPC8xxx_PICFRR_NCPU_SHIFT 8
+
+/*
+ * Return a 32-bit mask indicating which cores are present on this SOC.
+ */
+u32 cpu_mask()
+{
+ ccsr_pic_t __iomem *pic = (void *)CONFIG_SYS_MPC8xxx_PIC_ADDR;
+ struct cpu_type *cpu = gd->cpu;
+
+ /* better to query feature reporting register than just assume 1 */
+ if (cpu == &cpu_type_unknown)
+ return ((in_be32(&pic->frr) & MPC8xxx_PICFRR_NCPU_MASK) >>
+ MPC8xxx_PICFRR_NCPU_SHIFT) + 1;
+
+ return cpu->mask;
+}
+
+/*
+ * Return the number of cores on this SOC.
+ */
int cpu_numcores() {
ccsr_pic_t __iomem *pic = (void *)CONFIG_SYS_MPC8xxx_PIC_ADDR;
struct cpu_type *cpu = gd->cpu;
/* better to query feature reporting register than just assume 1 */
-#define MPC8xxx_PICFRR_NCPU_MASK 0x00001f00
-#define MPC8xxx_PICFRR_NCPU_SHIFT 8
if (cpu == &cpu_type_unknown)
return ((in_be32(&pic->frr) & MPC8xxx_PICFRR_NCPU_MASK) >>
MPC8xxx_PICFRR_NCPU_SHIFT) + 1;
@@ -143,6 +163,18 @@ int cpu_numcores() {
return cpu->num_cores;
}
+/*
+ * Check if the given core ID is valid
+ *
+ * Returns zero if it isn't, 1 if it is.
+ */
+int is_core_valid(unsigned int core)
+{
+ struct cpu_type *cpu = gd->cpu;
+
+ return !!((1 << core) & cpu->mask);
+}
+
int probecpu (void)
{
uint svr;
diff --git a/arch/powerpc/cpu/mpc8xxx/fdt.c b/arch/powerpc/cpu/mpc8xxx/fdt.c
index 285051d96c..5bb9f53542 100644
--- a/arch/powerpc/cpu/mpc8xxx/fdt.c
+++ b/arch/powerpc/cpu/mpc8xxx/fdt.c
@@ -63,7 +63,7 @@ void ft_fixup_num_cores(void *blob) {
while (off != -FDT_ERR_NOTFOUND) {
u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
- if ((*reg > num_cores-1) || (is_core_disabled(*reg))) {
+ if (!is_core_valid(*reg) || is_core_disabled(*reg)) {
int ph = fdt_get_phandle(blob, off);
/* Delete the cpu node once there are no cpu handles */
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 0c4cc2554b..50af6e7fc2 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -1176,13 +1176,17 @@ struct cpu_type {
char name[15];
u32 soc_ver;
u32 num_cores;
+ u32 mask; /* which cpu(s) actually exist */
};
struct cpu_type *identify_cpu(u32 ver);
#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
#define CPU_TYPE_ENTRY(n, v, nc) \
- { .name = #n, .soc_ver = SVR_##v, .num_cores = (nc), }
+ { .name = #n, .soc_ver = SVR_##v, .num_cores = (nc), \
+ .mask = (1 << (nc)) - 1 }
+#define CPU_TYPE_ENTRY_MASK(n, v, nc, m) \
+ { .name = #n, .soc_ver = SVR_##v, .num_cores = (nc), .mask = (m) }
#else
#if defined(CONFIG_MPC83xx)
#define CPU_TYPE_ENTRY(x) {#x, SPR_##x}
diff --git a/common/cmd_mp.c b/common/cmd_mp.c
index f19bf41f8e..b115b59136 100644
--- a/common/cmd_mp.c
+++ b/common/cmd_mp.c
@@ -32,9 +32,8 @@ cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return cmd_usage(cmdtp);
cpuid = simple_strtoul(argv[1], NULL, 10);
- if (cpuid >= cpu_numcores()) {
- printf ("Core num: %lu is out of range[0..%d]\n",
- cpuid, cpu_numcores() - 1);
+ if (!is_core_valid(cpuid)) {
+ printf ("Core num: %lu is not valid\n", cpuid);
return 1;
}
diff --git a/include/common.h b/include/common.h
index d244bd40b5..05e2f728e7 100644
--- a/include/common.h
+++ b/include/common.h
@@ -485,7 +485,22 @@ void ddr_enable_ecc(unsigned int dram_size);
#endif
/* $(CPU)/cpu.c */
+static inline int cpumask_next(int cpu, unsigned int mask)
+{
+ for (cpu++; !((1 << cpu) & mask); cpu++)
+ ;
+
+ return cpu;
+}
+
+#define for_each_cpu(iter, cpu, num_cpus, mask) \
+ for (iter = 0, cpu = cpumask_next(-1, mask); \
+ iter < num_cpus; \
+ iter++, cpu = cpumask_next(cpu, mask)) \
+
int cpu_numcores (void);
+u32 cpu_mask (void);
+int is_core_valid (unsigned int);
int probecpu (void);
int checkcpu (void);
int checkicache (void);
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