Add functions to access the OCOTP fuses field wise, similar to what has been done for the IIM. Also add a i.MX6 fusemap header file. Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> --- arch/arm/mach-imx/include/mach/imx6-fusemap.h | 63 ++++++++++++++++++++++++++ arch/arm/mach-imx/include/mach/ocotp.h | 20 +++++++++ arch/arm/mach-imx/ocotp.c | 65 +++++++++++++++++++++++++++ 3 files changed, 148 insertions(+) create mode 100644 arch/arm/mach-imx/include/mach/imx6-fusemap.h create mode 100644 arch/arm/mach-imx/include/mach/ocotp.h diff --git a/arch/arm/mach-imx/include/mach/imx6-fusemap.h b/arch/arm/mach-imx/include/mach/imx6-fusemap.h new file mode 100644 index 0000000..5fdd904 --- /dev/null +++ b/arch/arm/mach-imx/include/mach/imx6-fusemap.h @@ -0,0 +1,63 @@ +#ifndef __MACH_IMX_IMX6_OCOTP_H +#define __MACH_IMX_IMX6_OCOTP_H + +#include <mach/ocotp.h> + +#define IMX6_OCOTP_TESTER_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(0) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_BOOT_CFG_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(2) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_MEM_TRIM_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(4) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_SJC_RESP_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(6) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_MAC_ADDR_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(8) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_GP1_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(10) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_GP2_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(12) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_SRK_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(14) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_ANALOG_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(18) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_MISC_CONF_LOCK (OCOTP_WORD(0x400) | OCOTP_BIT(22) | OCOTP_WIDTH(1)) + +/* 0 <= n <= 1 */ +#define IMX6_OCOTP_UNIQUE_ID(n) (OCOTP_WORD(0x410 + 0x10 * (n)) | OCOTP_BIT(0) | OCOTP_WIDTH(32)) +#define IMX6_OCOTP_SI_REV (OCOTP_WORD(0x430) | OCOTP_BIT(16) | OCOTP_WIDTH(4)) +#define IMX6_OCOTP_NUM_CORES (OCOTP_WORD(0x430) | OCOTP_BIT(20) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_SATA_RST_SRC (OCOTP_WORD(0x430) | OCOTP_BIT(24) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_MLB_DISABLE (OCOTP_WORD(0x430) | OCOTP_BIT(26) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_VPU_DISABLE (OCOTP_WORD(0x440) | OCOTP_BIT(15) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_SPEED_GRADING (OCOTP_WORD(0x440) | OCOTP_BIT(16) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_BOOT_CFG1 (OCOTP_WORD(0x450) | OCOTP_BIT(0) | OCOTP_WIDTH(8)) +#define IMX6_OCOTP_BOOT_CFG2 (OCOTP_WORD(0x450) | OCOTP_BIT(8) | OCOTP_WIDTH(8)) +#define IMX6_OCOTP_BOOT_CFG3 (OCOTP_WORD(0x450) | OCOTP_BIT(16) | OCOTP_WIDTH(8)) +#define IMX6_OCOTP_BOOT_CFG4 (OCOTP_WORD(0x450) | OCOTP_BIT(24) | OCOTP_WIDTH(8)) +#define IMX6_OCOTP_SEC_CONFIG (OCOTP_WORD(0x460) | OCOTP_BIT(1) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_DIR_BT_DIS (OCOTP_WORD(0x460) | OCOTP_BIT(3) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_BT_FUSE_SEL (OCOTP_WORD(0x460) | OCOTP_BIT(4) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_DDR3_CONFIG (OCOTP_WORD(0x460) | OCOTP_BIT(8) | OCOTP_WIDTH(8)) +#define IMX6_OCOTP_HDCP (OCOTP_WORD(0x460) | OCOTP_BIT(16) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_SJC_DISABLE (OCOTP_WORD(0x460) | OCOTP_BIT(20) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_WDOG_ENABLE (OCOTP_WORD(0x460) | OCOTP_BIT(21) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_JTAG_SMODE (OCOTP_WORD(0x460) | OCOTP_BIT(22) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_KTE (OCOTP_WORD(0x460) | OCOTP_BIT(26) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_JTAG_HEO (OCOTP_WORD(0x460) | OCOTP_BIT(27) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_TZASC_ENABLE (OCOTP_WORD(0x460) | OCOTP_BIT(28) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_SDMMC_HYS_EN (OCOTP_WORD(0x460) | OCOTP_BIT(29) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_eMMC_RESET_EN (OCOTP_WORD(0x460) | OCOTP_BIT(30) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_NAND_READ_CMD_CODE1 (OCOTP_WORD(0x470) | OCOTP_BIT(0) | OCOTP_WIDTH(8)) +#define IMX6_OCOTP_NAND_READ_CMD_CODE2 (OCOTP_WORD(0x470) | OCOTP_BIT(8) | OCOTP_WIDTH(8)) +#define IMX6_OCOTP_BT_LPB_POLARITY (OCOTP_WORD(0x470) | OCOTP_BIT(20) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_LPB_BOOT (OCOTP_WORD(0x470) | OCOTP_BIT(21) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_MMC_DLL_DLY (OCOTP_WORD(0x470) | OCOTP_BIT(24) | OCOTP_WIDTH(7)) +#define IMX6_OCOTP_TEMPERATURE_GRADE (OCOTP_WORD(0x480) | OCOTP_BIT(6) | OCOTP_WIDTH(2)) +#define IMX6_OCOTP_POWER_GATE_CORES (OCOTP_WORD(0x4d0) | OCOTP_BIT(31) | OCOTP_WIDTH(1)) +#define IMX6_OCOTP_USB_VID (OCOTP_WORD(0x4f0) | OCOTP_BIT(0) | OCOTP_WIDTH(16)) +#define IMX6_OCOTP_USB_PID (OCOTP_WORD(0x4f0) | OCOTP_BIT(16) | OCOTP_WIDTH(16)) +/* 0 <= n <= 7 */ +#define IMX6_OCOTP_SRK_HASH(n) (OCOTP_WORD(0x580 + 0x10 * (n)) | OCOTP_BIT(0) | OCOTP_WIDTH(32)) +#define IMX6_OCOTP_SJC_RESP_31_0 (OCOTP_WORD(0x600) | OCOTP_BIT(0) | OCOTP_WIDTH(32)) +#define IMX6_OCOTP_SJC_RESP_55_32 (OCOTP_WORD(0x610) | OCOTP_BIT(0) | OCOTP_WIDTH(24)) +#define IMX6_OCOTP_MAC_ADDR_31_0 (OCOTP_WORD(0x620) | OCOTP_BIT(0) | OCOTP_WIDTH(32)) +#define IMX6_OCOTP_MAC_ADDR_47_32 (OCOTP_WORD(0x630) | OCOTP_BIT(0) | OCOTP_WIDTH(16)) +#define IMX6_OCOTP_GP1 (OCOTP_WORD(0x660) | OCOTP_BIT(0) | OCOTP_WIDTH(32)) +#define IMX6_OCOTP_GP2 (OCOTP_WORD(0x670) | OCOTP_BIT(0) | OCOTP_WIDTH(32)) +#define IMX6_OCOTP_PAD_SETTINGS (OCOTP_WORD(0x6d0) | OCOTP_BIT(0) | OCOTP_WIDTH(6)) +#define IMX6DQ_OCOTP_TEST_PORT_DISABLE (OCOTP_WORD(0x6e0) | OCOTP_BIT(1) | OCOTP_WIDTH(1)) +#define IMX6SDL_OCOTP_FIELD_RETURN (OCOTP_WORD(0x6e0) | OCOTP_BIT(0) | OCOTP_WIDTH(1)) + +#endif /* __MACH_IMX_IMX6_OCOTP_H */ diff --git a/arch/arm/mach-imx/include/mach/ocotp.h b/arch/arm/mach-imx/include/mach/ocotp.h new file mode 100644 index 0000000..430bc75 --- /dev/null +++ b/arch/arm/mach-imx/include/mach/ocotp.h @@ -0,0 +1,20 @@ +#ifndef __MACH_IMX_OCOTP_H +#define __MACH_IMX_OCOTP_H + +#define OCOTP_WORD_MASK_WIDTH 8 +#define OCOTP_WORD_MASK_SHIFT 0 +#define OCOTP_WORD(n) ((((n) - 0x400) >> 4) & ((1 << OCOTP_WORD_MASK_WIDTH) - 1)) + +#define OCOTP_BIT_MASK_WIDTH 5 +#define OCOTP_BIT_MASK_SHIFT (OCOTP_WORD_MASK_SHIFT + OCOTP_WORD_MASK_WIDTH) +#define OCOTP_BIT(n) (((n) & ((1 << OCOTP_BIT_MASK_WIDTH) - 1)) << OCOTP_BIT_MASK_SHIFT) + +#define OCOTP_WIDTH_MASK_WIDTH 5 +#define OCOTP_WIDTH_MASK_SHIFT (OCOTP_BIT_MASK_SHIFT + OCOTP_BIT_MASK_WIDTH) +#define OCOTP_WIDTH(n) ((((n) - 1) & ((1 << OCOTP_WIDTH_MASK_WIDTH) - 1)) << OCOTP_WIDTH_MASK_SHIFT) + +int imx_ocotp_read_field(uint32_t field, unsigned *value); +int imx_ocotp_write_field(uint32_t field, unsigned value); +int imx_ocotp_permanent_write(int enable); + +#endif /* __MACH_IMX_OCOTP_H */ diff --git a/arch/arm/mach-imx/ocotp.c b/arch/arm/mach-imx/ocotp.c index 17b944b..3acec7f 100644 --- a/arch/arm/mach-imx/ocotp.c +++ b/arch/arm/mach-imx/ocotp.c @@ -28,6 +28,7 @@ #include <clock.h> #include <regmap.h> #include <linux/clk.h> +#include <mach/ocotp.h> /* * a single MAC address reference has the form @@ -87,6 +88,8 @@ struct ocotp_priv { struct regmap_config map_config; }; +static struct ocotp_priv *imx_ocotp; + static int imx6_ocotp_set_timing(struct ocotp_priv *priv) { u32 clk_rate; @@ -282,6 +285,66 @@ static int imx_ocotp_reg_write(void *ctx, unsigned int reg, unsigned int val) return 0; } +static void imx_ocotp_field_decode(uint32_t field, unsigned *word, + unsigned *bit, unsigned *mask) +{ + unsigned width; + + *word = ((field >> OCOTP_WORD_MASK_SHIFT) & ((1 << OCOTP_WORD_MASK_WIDTH) - 1)) * 4; + *bit = (field >> OCOTP_BIT_MASK_SHIFT) & ((1 << OCOTP_BIT_MASK_WIDTH) - 1); + width = ((field >> OCOTP_WIDTH_MASK_SHIFT) & ((1 << OCOTP_WIDTH_MASK_WIDTH) - 1)) + 1; + *mask = (1 << width) - 1; +} + +int imx_ocotp_read_field(uint32_t field, unsigned *value) +{ + unsigned word, bit, mask, val; + int ret; + + imx_ocotp_field_decode(field, &word, &bit, &mask); + + ret = imx_ocotp_reg_read(imx_ocotp, word, &val); + if (ret) + return ret; + + val >>= bit; + val &= mask; + + dev_dbg(&imx_ocotp->dev, "%s: word: 0x%x bit: %d mask: 0x%x val: 0x%x\n", + __func__, word, bit, mask, val); + + *value = val; + + return 0; +} + +int imx_ocotp_write_field(uint32_t field, unsigned value) +{ + unsigned word, bit, mask; + int ret; + + imx_ocotp_field_decode(field, &word, &bit, &mask); + + value &= mask; + value <<= bit; + + ret = imx_ocotp_reg_write(imx_ocotp, word, value); + if (ret) + return ret; + + dev_dbg(&imx_ocotp->dev, "%s: word: 0x%x bit: %d mask: 0x%x val: 0x%x\n", + __func__, word, bit, mask, value); + + return 0; +} + +int imx_ocotp_permanent_write(int enable) +{ + imx_ocotp->permanent_write_enable = enable; + + return 0; +} + static uint32_t inc_offset(uint32_t offset) { if ((offset & 0x3) == 0x3) @@ -412,6 +475,8 @@ static int imx_ocotp_probe(struct device_d *dev) if (ret) return ret; + imx_ocotp = priv; + if (IS_ENABLED(CONFIG_IMX_OCOTP_WRITE)) { dev_add_param_bool(&(priv->dev), "permanent_write_enable", NULL, NULL, &priv->permanent_write_enable, NULL); -- 2.10.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox