aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/bcm63xx/cpu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/bcm63xx/cpu.c')
-rw-r--r--arch/mips/bcm63xx/cpu.c173
1 files changed, 121 insertions, 52 deletions
diff --git a/arch/mips/bcm63xx/cpu.c b/arch/mips/bcm63xx/cpu.c
index a7afb289b15..fd4e76c00a4 100644
--- a/arch/mips/bcm63xx/cpu.c
+++ b/arch/mips/bcm63xx/cpu.c
@@ -25,10 +25,18 @@ const int *bcm63xx_irqs;
EXPORT_SYMBOL(bcm63xx_irqs);
static u16 bcm63xx_cpu_id;
-static u16 bcm63xx_cpu_rev;
+static u8 bcm63xx_cpu_rev;
static unsigned int bcm63xx_cpu_freq;
static unsigned int bcm63xx_memory_size;
+static const unsigned long bcm3368_regs_base[] = {
+ __GEN_CPU_REGS_TABLE(3368)
+};
+
+static const int bcm3368_irqs[] = {
+ __GEN_CPU_IRQ_TABLE(3368)
+};
+
static const unsigned long bcm6328_regs_base[] = {
__GEN_CPU_REGS_TABLE(6328)
};
@@ -71,6 +79,15 @@ static const int bcm6358_irqs[] = {
};
+static const unsigned long bcm6362_regs_base[] = {
+ __GEN_CPU_REGS_TABLE(6362)
+};
+
+static const int bcm6362_irqs[] = {
+ __GEN_CPU_IRQ_TABLE(6362)
+
+};
+
static const unsigned long bcm6368_regs_base[] = {
__GEN_CPU_REGS_TABLE(6368)
};
@@ -87,7 +104,7 @@ u16 __bcm63xx_get_cpu_id(void)
EXPORT_SYMBOL(__bcm63xx_get_cpu_id);
-u16 bcm63xx_get_cpu_rev(void)
+u8 bcm63xx_get_cpu_rev(void)
{
return bcm63xx_cpu_rev;
}
@@ -106,7 +123,12 @@ unsigned int bcm63xx_get_memory_size(void)
static unsigned int detect_cpu_clock(void)
{
- switch (bcm63xx_get_cpu_id()) {
+ u16 cpu_id = bcm63xx_get_cpu_id();
+
+ switch (cpu_id) {
+ case BCM3368_CPU_ID:
+ return 300000000;
+
case BCM6328_CPU_ID:
{
unsigned int tmp, mips_pll_fcvo;
@@ -169,6 +191,42 @@ static unsigned int detect_cpu_clock(void)
return (16 * 1000000 * n1 * n2) / m1;
}
+ case BCM6362_CPU_ID:
+ {
+ unsigned int tmp, mips_pll_fcvo;
+
+ tmp = bcm_misc_readl(MISC_STRAPBUS_6362_REG);
+ mips_pll_fcvo = (tmp & STRAPBUS_6362_FCVO_MASK)
+ >> STRAPBUS_6362_FCVO_SHIFT;
+ switch (mips_pll_fcvo) {
+ case 0x03:
+ case 0x0b:
+ case 0x13:
+ case 0x1b:
+ return 240000000;
+ case 0x04:
+ case 0x0c:
+ case 0x14:
+ case 0x1c:
+ return 160000000;
+ case 0x05:
+ case 0x0e:
+ case 0x16:
+ case 0x1e:
+ case 0x1f:
+ return 400000000;
+ case 0x06:
+ return 440000000;
+ case 0x07:
+ case 0x17:
+ return 384000000;
+ case 0x15:
+ case 0x1d:
+ return 200000000;
+ default:
+ return 320000000;
+ }
+ }
case BCM6368_CPU_ID:
{
unsigned int tmp, p1, p2, ndiv, m1;
@@ -193,7 +251,7 @@ static unsigned int detect_cpu_clock(void)
}
default:
- BUG();
+ panic("Failed to detect clock for CPU with id=%04X\n", cpu_id);
}
}
@@ -205,7 +263,7 @@ static unsigned int detect_memory_size(void)
unsigned int cols = 0, rows = 0, is_32bits = 0, banks = 0;
u32 val;
- if (BCMCPU_IS_6328())
+ if (BCMCPU_IS_6328() || BCMCPU_IS_6362())
return bcm_ddr_readl(DDR_CSEND_REG) << 24;
if (BCMCPU_IS_6345()) {
@@ -221,7 +279,7 @@ static unsigned int detect_memory_size(void)
banks = (val & SDRAM_CFG_BANK_MASK) ? 2 : 1;
}
- if (BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
+ if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
val = bcm_memc_readl(MEMC_CFG_REG);
rows = (val & MEMC_CFG_ROW_MASK) >> MEMC_CFG_ROW_SHIFT;
cols = (val & MEMC_CFG_COL_MASK) >> MEMC_CFG_COL_SHIFT;
@@ -240,52 +298,32 @@ static unsigned int detect_memory_size(void)
void __init bcm63xx_cpu_init(void)
{
- unsigned int tmp, expected_cpu_id;
- struct cpuinfo_mips *c = &current_cpu_data;
+ unsigned int tmp;
unsigned int cpu = smp_processor_id();
+ u32 chipid_reg;
/* soc registers location depends on cpu type */
- expected_cpu_id = 0;
+ chipid_reg = 0;
- switch (c->cputype) {
+ switch (current_cpu_type()) {
case CPU_BMIPS3300:
- if ((read_c0_prid() & 0xff00) == PRID_IMP_BMIPS3300_ALT) {
- expected_cpu_id = BCM6348_CPU_ID;
- bcm63xx_regs_base = bcm6348_regs_base;
- bcm63xx_irqs = bcm6348_irqs;
- } else {
+ if ((read_c0_prid() & PRID_IMP_MASK) != PRID_IMP_BMIPS3300_ALT)
__cpu_name[cpu] = "Broadcom BCM6338";
- expected_cpu_id = BCM6338_CPU_ID;
- bcm63xx_regs_base = bcm6338_regs_base;
- bcm63xx_irqs = bcm6338_irqs;
- }
- break;
+ /* fall-through */
case CPU_BMIPS32:
- expected_cpu_id = BCM6345_CPU_ID;
- bcm63xx_regs_base = bcm6345_regs_base;
- bcm63xx_irqs = bcm6345_irqs;
+ chipid_reg = BCM_6345_PERF_BASE;
break;
case CPU_BMIPS4350:
- if ((read_c0_prid() & 0xf0) == 0x10) {
- expected_cpu_id = BCM6358_CPU_ID;
- bcm63xx_regs_base = bcm6358_regs_base;
- bcm63xx_irqs = bcm6358_irqs;
- } else {
- /* all newer chips have the same chip id location */
- u16 chip_id = bcm_readw(BCM_6368_PERF_BASE);
-
- switch (chip_id) {
- case BCM6328_CPU_ID:
- expected_cpu_id = BCM6328_CPU_ID;
- bcm63xx_regs_base = bcm6328_regs_base;
- bcm63xx_irqs = bcm6328_irqs;
- break;
- case BCM6368_CPU_ID:
- expected_cpu_id = BCM6368_CPU_ID;
- bcm63xx_regs_base = bcm6368_regs_base;
- bcm63xx_irqs = bcm6368_irqs;
- break;
- }
+ switch ((read_c0_prid() & PRID_REV_MASK)) {
+ case 0x04:
+ chipid_reg = BCM_3368_PERF_BASE;
+ break;
+ case 0x10:
+ chipid_reg = BCM_6345_PERF_BASE;
+ break;
+ default:
+ chipid_reg = BCM_6368_PERF_BASE;
+ break;
}
break;
}
@@ -294,20 +332,51 @@ void __init bcm63xx_cpu_init(void)
* really early to panic, but delaying panic would not help since we
* will never get any working console
*/
- if (!expected_cpu_id)
+ if (!chipid_reg)
panic("unsupported Broadcom CPU");
- /*
- * bcm63xx_regs_base is set, we can access soc registers
- */
-
- /* double check CPU type */
- tmp = bcm_perf_readl(PERF_REV_REG);
+ /* read out CPU type */
+ tmp = bcm_readl(chipid_reg);
bcm63xx_cpu_id = (tmp & REV_CHIPID_MASK) >> REV_CHIPID_SHIFT;
bcm63xx_cpu_rev = (tmp & REV_REVID_MASK) >> REV_REVID_SHIFT;
- if (bcm63xx_cpu_id != expected_cpu_id)
- panic("bcm63xx CPU id mismatch");
+ switch (bcm63xx_cpu_id) {
+ case BCM3368_CPU_ID:
+ bcm63xx_regs_base = bcm3368_regs_base;
+ bcm63xx_irqs = bcm3368_irqs;
+ break;
+ case BCM6328_CPU_ID:
+ bcm63xx_regs_base = bcm6328_regs_base;
+ bcm63xx_irqs = bcm6328_irqs;
+ break;
+ case BCM6338_CPU_ID:
+ bcm63xx_regs_base = bcm6338_regs_base;
+ bcm63xx_irqs = bcm6338_irqs;
+ break;
+ case BCM6345_CPU_ID:
+ bcm63xx_regs_base = bcm6345_regs_base;
+ bcm63xx_irqs = bcm6345_irqs;
+ break;
+ case BCM6348_CPU_ID:
+ bcm63xx_regs_base = bcm6348_regs_base;
+ bcm63xx_irqs = bcm6348_irqs;
+ break;
+ case BCM6358_CPU_ID:
+ bcm63xx_regs_base = bcm6358_regs_base;
+ bcm63xx_irqs = bcm6358_irqs;
+ break;
+ case BCM6362_CPU_ID:
+ bcm63xx_regs_base = bcm6362_regs_base;
+ bcm63xx_irqs = bcm6362_irqs;
+ break;
+ case BCM6368_CPU_ID:
+ bcm63xx_regs_base = bcm6368_regs_base;
+ bcm63xx_irqs = bcm6368_irqs;
+ break;
+ default:
+ panic("unsupported broadcom CPU %x", bcm63xx_cpu_id);
+ break;
+ }
bcm63xx_cpu_freq = detect_cpu_clock();
bcm63xx_memory_size = detect_memory_size();
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 12:16:27 +0000