diff options
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/samsung/exynos5250/Kconfig | 8 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/Kconfig | 18 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/clock_init.c | 2 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/cpu.c | 30 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/cpu.h | 1 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/dmc_init_ddr3.c | 8 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/gpio.c | 4 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/setup.h | 8 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5420/smp.c | 5 |
9 files changed, 36 insertions, 48 deletions
diff --git a/src/cpu/samsung/exynos5250/Kconfig b/src/cpu/samsung/exynos5250/Kconfig index 91b691d3e6..e0e179dd64 100644 --- a/src/cpu/samsung/exynos5250/Kconfig +++ b/src/cpu/samsung/exynos5250/Kconfig @@ -69,21 +69,21 @@ config STACK_TOP config STACK_BOTTOM hex - default 0x02077000 + default 0x02074000 config STACK_SIZE hex - default 0x1000 + default 0x4000 # TODO We may probably move this to board-specific implementation files instead # of KConfig values. config CBFS_CACHE_ADDRESS hex "memory address to put CBFS cache data" - default 0x02060000 + default 0x0205c000 config CBFS_CACHE_SIZE hex "size of CBFS cache data" - default 0x000017000 + default 0x00018000 config SYS_SDRAM_BASE hex diff --git a/src/cpu/samsung/exynos5420/Kconfig b/src/cpu/samsung/exynos5420/Kconfig index 606604091b..d3eafcba75 100644 --- a/src/cpu/samsung/exynos5420/Kconfig +++ b/src/cpu/samsung/exynos5420/Kconfig @@ -46,12 +46,12 @@ config CBFS_ROM_OFFSET # 0x0202_4400: variable length bootblock checksum header. # 0x0202_4410: bootblock, assume up to 32KB in size # 0x0203_0000: romstage, assume up to 128KB in size. -# 0x0206_0000: cache for CBFS data. +# 0x0205_c000: cache for CBFS data. +# 0x0206_f000: stack bottom +# 0x0207_3000: stack pointer # 0x0207_3000: shared (with kernel) page for cpu & secondary core states. # the shared data is currently only <0x50 bytes so we can share # this page with stack. -# 0x0207_3100: stack bottom -# 0x0207_4000: stack pointer config BOOTBLOCK_BASE hex @@ -63,7 +63,7 @@ config ROMSTAGE_BASE config ROMSTAGE_SIZE hex - default 0x10000 + default 0x20000 # Stack may reside in either IRAM or DRAM. We will define it to live # at the top of IRAM for now. @@ -72,25 +72,25 @@ config ROMSTAGE_SIZE # consecutive memory locations ending just below SP config STACK_TOP hex - default 0x02074000 + default 0x02073000 config STACK_BOTTOM hex - default 0x02073100 + default 0x0206f000 config STACK_SIZE hex - default 0x0f00 + default 0x4000 # TODO We may probably move this to board-specific implementation files instead # of KConfig values. config CBFS_CACHE_ADDRESS hex "memory address to put CBFS cache data" - default 0x02060000 + default 0x0205c000 config CBFS_CACHE_SIZE hex "size of CBFS cache data" - default 0x000013000 + default 0x00013000 config SYS_SDRAM_BASE hex diff --git a/src/cpu/samsung/exynos5420/clock_init.c b/src/cpu/samsung/exynos5420/clock_init.c index 658b2559e8..eeeda90bf2 100644 --- a/src/cpu/samsung/exynos5420/clock_init.c +++ b/src/cpu/samsung/exynos5420/clock_init.c @@ -81,7 +81,7 @@ void system_clock_init(void) /* Set KPLL*/ writel(KPLL_CON1_VAL, &clk->kpll_con1); - val = set_pll(0xc8, 0x2, 0x2); + val = set_pll(0x190, 0x4, 0x2); writel(val, &clk->kpll_con0); while ((readl(&clk->kpll_con0) & PLL_LOCKED) == 0) ; diff --git a/src/cpu/samsung/exynos5420/cpu.c b/src/cpu/samsung/exynos5420/cpu.c index 176a3f2595..3b87c6e0ee 100644 --- a/src/cpu/samsung/exynos5420/cpu.c +++ b/src/cpu/samsung/exynos5420/cpu.c @@ -206,33 +206,3 @@ struct chip_operations cpu_samsung_exynos5420_ops = { CHIP_NAME("CPU Samsung Exynos 5420") .enable_dev = enable_exynos5420_dev, }; - -void exynos5420_config_l2_cache(void) -{ - uint32_t val; - - /* - * Bit 9 - L2 tag RAM setup (1 cycle) - * Bits 8:6 - L2 tag RAM latency (3 cycles) - * Bit 5 - L2 data RAM setup (1 cycle) - * Bits 2:0 - L2 data RAM latency (3 cycles) - */ - val = (1 << 9) | (0x2 << 6) | (1 << 5) | (0x2); - write_l2ctlr(val); - - val = read_l2actlr(); - - /* L2ACTLR[3]: Disable clean/evict push to external */ - val |= (1 << 3); - - /* L2ACTLR[7]: Enable hazard detect timeout for A15 */ - val |= (1 << 7); - - /* L2ACTLR[27]: Prevents stopping the L2 logic clock */ - val |= (1 << 27); - - write_l2actlr(val); - - /* Read the l2 control register to force things to take effect? */ - val = read_l2ctlr(); -} diff --git a/src/cpu/samsung/exynos5420/cpu.h b/src/cpu/samsung/exynos5420/cpu.h index 08f315a57d..8d3d48bda4 100644 --- a/src/cpu/samsung/exynos5420/cpu.h +++ b/src/cpu/samsung/exynos5420/cpu.h @@ -263,7 +263,6 @@ static inline u32 get_fb_base_kb(void) } /* Procedures to setup Exynos5420 CPU */ -void exynos5420_config_l2_cache(void); void exynos5420_config_smp(void); #endif /* _EXYNOS5420_CPU_H */ diff --git a/src/cpu/samsung/exynos5420/dmc_init_ddr3.c b/src/cpu/samsung/exynos5420/dmc_init_ddr3.c index ebfe1e1a0f..6c431f374f 100644 --- a/src/cpu/samsung/exynos5420/dmc_init_ddr3.c +++ b/src/cpu/samsung/exynos5420/dmc_init_ddr3.c @@ -376,5 +376,13 @@ int ddr3_mem_ctrl_init(struct mem_timings *mem, int interleave_size, int reset) writel(mem->concontrol | (mem->aref_en << CONCONTROL_AREF_EN_SHIFT) | (mem->rd_fetch << CONCONTROL_RD_FETCH_SHIFT), &drex1->concontrol); + + /* Enable Clock Gating Control for DMC + * this saves around 25 mw dmc power as compared to the power + * consumption without these bits enabled + */ + setbits_le32(&drex0->cgcontrol, DMC_INTERNAL_CG); + setbits_le32(&drex1->cgcontrol, DMC_INTERNAL_CG); + return 0; } diff --git a/src/cpu/samsung/exynos5420/gpio.c b/src/cpu/samsung/exynos5420/gpio.c index 2a93328a70..b17ff40d55 100644 --- a/src/cpu/samsung/exynos5420/gpio.c +++ b/src/cpu/samsung/exynos5420/gpio.c @@ -206,10 +206,10 @@ int gpio_set_value(unsigned gpio, int value) /* * Add a delay here to give the lines time to settle - * TODO(sjg): 1us does not always work, 2 is stable, so use 5 to be safe + * TODO(dianders): 5us does not always work, 10 is stable, so use 15 to be safe * Come back to this and sort out what the datasheet says */ -#define GPIO_DELAY_US 5 +#define GPIO_DELAY_US 15 #ifndef __BOOT_BLOCK__ /* diff --git a/src/cpu/samsung/exynos5420/setup.h b/src/cpu/samsung/exynos5420/setup.h index 794d4e14df..8f14a91602 100644 --- a/src/cpu/samsung/exynos5420/setup.h +++ b/src/cpu/samsung/exynos5420/setup.h @@ -791,6 +791,14 @@ struct exynos5_phy_control; #define BRBRSVCONTROL_VAL 0x00000033 #define BRBRSVCONFIG_VAL 0x88778877 +/* Clock Gating Control (CGCONTROL) register */ +#define MEMIF_CG_EN (1 << 3) /* Memory interface clock gating */ +#define SCG_CG_EN (1 << 2) /* Scheduler clock gating */ +#define BUSIF_WR_CG_EN (1 << 1) /* Bus interface write channel clock gating */ +#define BUSIF_RD_CG_EN (1 << 0) /* Bus interface read channel clock gating */ +#define DMC_INTERNAL_CG (MEMIF_CG_EN | SCG_CG_EN | \ + BUSIF_WR_CG_EN | BUSIF_RD_CG_EN) + /* DMC PHY Control0 register */ #define PHY_CONTROL0_RESET_VAL 0x0 #define MEM_TERM_EN (1 << 31) /* Termination enable for memory */ diff --git a/src/cpu/samsung/exynos5420/smp.c b/src/cpu/samsung/exynos5420/smp.c index 392f82d097..2a0656bcaf 100644 --- a/src/cpu/samsung/exynos5420/smp.c +++ b/src/cpu/samsung/exynos5420/smp.c @@ -271,7 +271,10 @@ static void power_down_core(void) /* Configures the CPU states shard memory page and then shutdown all cores. */ static void configure_secondary_cores(void) { - configure_l2ctlr(); + if (get_bits(read_midr(), 4, 12) == PART_NUMBER_CORTEX_A15) { + configure_l2ctlr(); + configure_l2actlr(); + } /* Currently we use power_down_core as callback for each core to * shutdown itself, but it is also ok to directly set ARM_CORE*_CONFIG |