diff options
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 2 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/cpu.h | 1 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/mp.c | 68 |
3 files changed, 66 insertions, 5 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c index eb03bf4..d6ee546 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c @@ -191,7 +191,7 @@ void enable_caches(void) } #endif -static inline u32 initiator_type(u32 cluster, int init_id) +u32 initiator_type(u32 cluster, int init_id) { struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); u32 idx = (cluster >> (init_id * 8)) & TP_CLUSTER_INIT_MASK; diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.h b/arch/arm/cpu/armv8/fsl-layerscape/cpu.h index 8072f3c..a05f8aa 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.h +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.h @@ -5,4 +5,5 @@ */ int fsl_qoriq_core_to_cluster(unsigned int core); +u32 initiator_type(u32 cluster, int init_id); u32 cpu_mask(void); diff --git a/arch/arm/cpu/armv8/fsl-layerscape/mp.c b/arch/arm/cpu/armv8/fsl-layerscape/mp.c index f607c39..97c6269 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/mp.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/mp.c @@ -9,6 +9,8 @@ #include <asm/system.h> #include <asm/arch/mp.h> #include <asm/arch/soc.h> +#include "cpu.h" +#include <asm/arch-fsl-layerscape/soc.h> DECLARE_GLOBAL_DATA_PTR; @@ -22,11 +24,39 @@ phys_addr_t determine_mp_bootpg(void) return (phys_addr_t)&secondary_boot_code; } +#ifdef CONFIG_FSL_LSCH3 +void wake_secondary_core_n(int cluster, int core, int cluster_cores) +{ + struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); + struct ccsr_reset __iomem *rst = (void *)(CONFIG_SYS_FSL_RST_ADDR); + u32 mpidr = 0; + + mpidr = ((cluster << 8) | core); + /* + * mpidr_el1 register value of core which needs to be released + * is written to scratchrw[6] register + */ + gur_out32(&gur->scratchrw[6], mpidr); + asm volatile("dsb st" : : : "memory"); + rst->brrl |= 1 << ((cluster * cluster_cores) + core); + asm volatile("dsb st" : : : "memory"); + /* + * scratchrw[6] register value is polled + * when the value becomes zero, this means that this core is up + * and running, next core can be released now + */ + while (gur_in32(&gur->scratchrw[6]) != 0) + ; +} +#endif + int fsl_layerscape_wake_seconday_cores(void) { struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); #ifdef CONFIG_FSL_LSCH3 struct ccsr_reset __iomem *rst = (void *)(CONFIG_SYS_FSL_RST_ADDR); + u32 svr, ver, cluster, type; + int j = 0, cluster_cores = 0; #elif defined(CONFIG_FSL_LSCH2) struct ccsr_scfg __iomem *scfg = (void *)(CONFIG_SYS_FSL_SCFG_ADDR); #endif @@ -55,10 +85,40 @@ int fsl_layerscape_wake_seconday_cores(void) #ifdef CONFIG_FSL_LSCH3 gur_out32(&gur->bootlocptrh, (u32)(gd->relocaddr >> 32)); gur_out32(&gur->bootlocptrl, (u32)gd->relocaddr); - gur_out32(&gur->scratchrw[6], 1); - asm volatile("dsb st" : : : "memory"); - rst->brrl = cores; - asm volatile("dsb st" : : : "memory"); + + svr = gur_in32(&gur->svr); + ver = SVR_SOC_VER(svr); + if (ver == SVR_LS2080A || ver == SVR_LS2085A) { + gur_out32(&gur->scratchrw[6], 1); + asm volatile("dsb st" : : : "memory"); + rst->brrl = cores; + asm volatile("dsb st" : : : "memory"); + } else { + /* + * Release the cores out of reset one-at-a-time to avoid + * power spikes + */ + i = 0; + cluster = in_le32(&gur->tp_cluster[i].lower); + for (j = 0; j < TP_INIT_PER_CLUSTER; j++) { + type = initiator_type(cluster, j); + if (type && + TP_ITYP_TYPE(type) == TP_ITYP_TYPE_ARM) + cluster_cores++; + } + + do { + cluster = in_le32(&gur->tp_cluster[i].lower); + for (j = 0; j < TP_INIT_PER_CLUSTER; j++) { + type = initiator_type(cluster, j); + if (type && + TP_ITYP_TYPE(type) == TP_ITYP_TYPE_ARM) + wake_secondary_core_n(i, j, + cluster_cores); + } + i++; + } while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC); + } #elif defined(CONFIG_FSL_LSCH2) scfg_out32(&scfg->scratchrw[0], (u32)(gd->relocaddr >> 32)); scfg_out32(&scfg->scratchrw[1], (u32)gd->relocaddr); |