diff options
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 58 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/imx-regs.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/pl310.h | 21 | ||||
| -rw-r--r-- | include/configs/mx6_common.h | 5 |
4 files changed, 85 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 4c5c367..1725279 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -8,6 +8,8 @@ */ #include <common.h> +#include <asm/armv7.h> +#include <asm/pl310.h> #include <asm/errno.h> #include <asm/io.h> #include <asm/arch/imx-regs.h> @@ -375,3 +377,59 @@ void imx_setup_hdmi(void) writel(reg, &mxc_ccm->chsccdr); } #endif + +#ifndef CONFIG_SYS_L2CACHE_OFF +#define IOMUXC_GPR11_L2CACHE_AS_OCRAM 0x00000002 +void v7_outer_cache_enable(void) +{ + struct pl310_regs *const pl310 = (struct pl310_regs *)L2_PL310_BASE; + unsigned int val; + +#if defined CONFIG_MX6SL + struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR; + val = readl(&iomux->gpr[11]); + if (val & IOMUXC_GPR11_L2CACHE_AS_OCRAM) { + /* L2 cache configured as OCRAM, reset it */ + val &= ~IOMUXC_GPR11_L2CACHE_AS_OCRAM; + writel(val, &iomux->gpr[11]); + } +#endif + + writel(0x132, &pl310->pl310_tag_latency_ctrl); + writel(0x132, &pl310->pl310_data_latency_ctrl); + + val = readl(&pl310->pl310_prefetch_ctrl); + + /* Turn on the L2 I/D prefetch */ + val |= 0x30000000; + + /* + * The L2 cache controller(PL310) version on the i.MX6D/Q is r3p1-50rel0 + * The L2 cache controller(PL310) version on the i.MX6DL/SOLO/SL is r3p2 + * But according to ARM PL310 errata: 752271 + * ID: 752271: Double linefill feature can cause data corruption + * Fault Status: Present in: r3p0, r3p1, r3p1-50rel0. Fixed in r3p2 + * Workaround: The only workaround to this erratum is to disable the + * double linefill feature. This is the default behavior. + */ + +#ifndef CONFIG_MX6Q + val |= 0x40800000; +#endif + writel(val, &pl310->pl310_prefetch_ctrl); + + val = readl(&pl310->pl310_power_ctrl); + val |= L2X0_DYNAMIC_CLK_GATING_EN; + val |= L2X0_STNDBY_MODE_EN; + writel(val, &pl310->pl310_power_ctrl); + + setbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN); +} + +void v7_outer_cache_disable(void) +{ + struct pl310_regs *const pl310 = (struct pl310_regs *)L2_PL310_BASE; + + clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN); +} +#endif /* !CONFIG_SYS_L2CACHE_OFF */ diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h index f2ad6e9..c2d210a 100644 --- a/arch/arm/include/asm/arch-mx6/imx-regs.h +++ b/arch/arm/include/asm/arch-mx6/imx-regs.h @@ -53,6 +53,7 @@ #define GLOBAL_TIMER_BASE_ADDR 0x00A00200 #define PRIVATE_TIMERS_WD_BASE_ADDR 0x00A00600 #define IC_DISTRIBUTOR_BASE_ADDR 0x00A01000 +#define L2_PL310_BASE 0x00A02000 #define GPV0_BASE_ADDR 0x00B00000 #define GPV1_BASE_ADDR 0x00C00000 #define PCIE_ARB_BASE_ADDR 0x01000000 diff --git a/arch/arm/include/asm/pl310.h b/arch/arm/include/asm/pl310.h index f41ad8c..ddc245b 100644 --- a/arch/arm/include/asm/pl310.h +++ b/arch/arm/include/asm/pl310.h @@ -12,6 +12,9 @@ /* Register bit fields */ #define PL310_AUX_CTRL_ASSOCIATIVITY_MASK (1 << 16) +#define L2X0_DYNAMIC_CLK_GATING_EN (1 << 1) +#define L2X0_STNDBY_MODE_EN (1 << 0) +#define L2X0_CTRL_EN 1 struct pl310_regs { u32 pl310_cache_id; @@ -47,6 +50,24 @@ struct pl310_regs { u32 pad9[1]; u32 pl310_clean_inv_line_idx; u32 pl310_clean_inv_way; + u32 pad10[64]; + u32 pl310_lockdown_dbase; + u32 pl310_lockdown_ibase; + u32 pad11[190]; + u32 pl310_addr_filter_start; + u32 pl310_addr_filter_end; + u32 pad12[190]; + u32 pl310_test_operation; + u32 pad13[3]; + u32 pl310_line_data; + u32 pad14[7]; + u32 pl310_line_tag; + u32 pad15[3]; + u32 pl310_debug_ctrl; + u32 pad16[7]; + u32 pl310_prefetch_ctrl; + u32 pad17[7]; + u32 pl310_power_ctrl; }; void pl310_inval_all(void); diff --git a/include/configs/mx6_common.h b/include/configs/mx6_common.h index 514d634..eb107d3 100644 --- a/include/configs/mx6_common.h +++ b/include/configs/mx6_common.h @@ -22,4 +22,9 @@ #define CONFIG_ARM_ERRATA_751472 #define CONFIG_BOARD_POSTCLK_INIT +#ifndef CONFIG_SYS_L2CACHE_OFF +#define CONFIG_SYS_L2_PL310 +#define CONFIG_SYS_PL310_BASE L2_PL310_BASE +#endif + #endif |