diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mvebu/Kconfig | 35 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/efuse.c | 264 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/include/mach/cpu.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/include/mach/efuse.h | 69 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/include/mach/soc.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.c | 8 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/spl.c | 2 |
9 files changed, 382 insertions, 2 deletions
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig index 53117c4296..412bda4160 100644 --- a/arch/arm/mach-mvebu/Kconfig +++ b/arch/arm/mach-mvebu/Kconfig @@ -1,5 +1,9 @@ if ARCH_MVEBU +config HAVE_MVEBU_EFUSE + bool + default n + config ARMADA_32BIT bool select CPU_V7 @@ -23,6 +27,7 @@ config ARMADA_375 config ARMADA_38X bool select ARMADA_32BIT + select HAVE_MVEBU_EFUSE config ARMADA_XP bool @@ -146,4 +151,34 @@ config SYS_VENDOR config SYS_SOC default "mvebu" +config MVEBU_EFUSE + bool "Enable eFuse support" + default n + depends on HAVE_MVEBU_EFUSE + help + Enable support for reading and writing eFuses on mvebu SoCs. + +config MVEBU_EFUSE_FAKE + bool "Fake eFuse access (dry run)" + default n + depends on MVEBU_EFUSE + help + This enables a "dry run" mode where eFuses are not really programmed. + Instead the eFuse accesses are emulated by writing to and reading + from a memory block. + This is can be used for testing prog scripts. + +config SECURED_MODE_IMAGE + bool "Build image for trusted boot" + default false + depends on 88F6820 + help + Build an image that employs the ARMADA SoC's trusted boot framework + for securely booting images. + +config SECURED_MODE_CSK_INDEX + int "Index of active CSK" + default 0 + depends on SECURED_MODE_IMAGE + endif diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile index 65e90c4fc9..d4210af9d2 100644 --- a/arch/arm/mach-mvebu/Makefile +++ b/arch/arm/mach-mvebu/Makefile @@ -27,6 +27,7 @@ ifndef CONFIG_SPL_BUILD obj-$(CONFIG_ARMADA_375) += ../../../drivers/ddr/marvell/axp/xor.o obj-$(CONFIG_ARMADA_38X) += ../../../drivers/ddr/marvell/a38x/xor.o obj-$(CONFIG_ARMADA_XP) += ../../../drivers/ddr/marvell/axp/xor.o +obj-$(CONFIG_MVEBU_EFUSE) += efuse.o endif # CONFIG_SPL_BUILD obj-y += gpio.o obj-y += mbus.o diff --git a/arch/arm/mach-mvebu/efuse.c b/arch/arm/mach-mvebu/efuse.c new file mode 100644 index 0000000000..67fcadcf60 --- /dev/null +++ b/arch/arm/mach-mvebu/efuse.c @@ -0,0 +1,264 @@ +/* + * Copyright (C) 2015-2016 Reinhard Pfau <reinhard.pfau@gdsys.cc> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> +#include <common.h> +#include <errno.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/efuse.h> +#include <asm/arch/soc.h> +#include <linux/mbus.h> + +#if defined(CONFIG_MVEBU_EFUSE_FAKE) +#define DRY_RUN +#else +#undef DRY_RUN +#endif + +#define MBUS_EFUSE_BASE 0xF6000000 +#define MBUS_EFUSE_SIZE BIT(20) + +#define MVEBU_EFUSE_CONTROL (MVEBU_REGISTER(0xE4008)) + +enum { + MVEBU_EFUSE_CTRL_PROGRAM_ENABLE = (1 << 31), +}; + +struct mvebu_hd_efuse { + u32 bits_31_0; + u32 bits_63_32; + u32 bit64; + u32 reserved0; +}; + +#ifndef DRY_RUN +static struct mvebu_hd_efuse *efuses = + (struct mvebu_hd_efuse *)(MBUS_EFUSE_BASE + 0xF9000); +#else +static struct mvebu_hd_efuse efuses[EFUSE_LINE_MAX + 1]; +#endif + +static int efuse_initialised; + +static struct mvebu_hd_efuse *get_efuse_line(int nr) +{ + if (nr < 0 || nr > 63 || !efuse_initialised) + return NULL; + + return efuses + nr; +} + +static void enable_efuse_program(void) +{ +#ifndef DRY_RUN + setbits_le32(MVEBU_EFUSE_CONTROL, MVEBU_EFUSE_CTRL_PROGRAM_ENABLE); +#endif +} + +static void disable_efuse_program(void) +{ +#ifndef DRY_RUN + clrbits_le32(MVEBU_EFUSE_CONTROL, MVEBU_EFUSE_CTRL_PROGRAM_ENABLE); +#endif +} + +static int do_prog_efuse(struct mvebu_hd_efuse *efuse, + struct efuse_val *new_val, u32 mask0, u32 mask1) +{ + struct efuse_val val; + + val.dwords.d[0] = readl(&efuse->bits_31_0); + val.dwords.d[1] = readl(&efuse->bits_63_32); + val.lock = readl(&efuse->bit64); + + if (val.lock & 1) + return -EPERM; + + val.dwords.d[0] |= (new_val->dwords.d[0] & mask0); + val.dwords.d[1] |= (new_val->dwords.d[1] & mask1); + val.lock |= new_val->lock; + + writel(val.dwords.d[0], &efuse->bits_31_0); + mdelay(1); + writel(val.dwords.d[1], &efuse->bits_63_32); + mdelay(1); + writel(val.lock, &efuse->bit64); + mdelay(5); + + return 0; +} + +static int prog_efuse(int nr, struct efuse_val *new_val, u32 mask0, u32 mask1) +{ + struct mvebu_hd_efuse *efuse; + int res = 0; + + res = mvebu_efuse_init_hw(); + if (res) + return res; + + efuse = get_efuse_line(nr); + if (!efuse) + return -ENODEV; + + if (!new_val) + return -EINVAL; + + /* only write a fuse line with lock bit */ + if (!new_val->lock) + return -EINVAL; + + /* according to specs ECC protection bits must be 0 on write */ + if (new_val->bytes.d[7] & 0xFE) + return -EINVAL; + + if (!new_val->dwords.d[0] && !new_val->dwords.d[1] && (mask0 | mask1)) + return 0; + + enable_efuse_program(); + + res = do_prog_efuse(efuse, new_val, mask0, mask1); + + disable_efuse_program(); + + return res; +} + +int mvebu_efuse_init_hw(void) +{ + int ret; + + if (efuse_initialised) + return 0; + + ret = mvebu_mbus_add_window_by_id( + CPU_TARGET_SATA23_DFX, 0xA, MBUS_EFUSE_BASE, MBUS_EFUSE_SIZE); + + if (ret) + return ret; + + efuse_initialised = 1; + + return 0; +} + +int mvebu_read_efuse(int nr, struct efuse_val *val) +{ + struct mvebu_hd_efuse *efuse; + int res; + + res = mvebu_efuse_init_hw(); + if (res) + return res; + + efuse = get_efuse_line(nr); + if (!efuse) + return -ENODEV; + + if (!val) + return -EINVAL; + + val->dwords.d[0] = readl(&efuse->bits_31_0); + val->dwords.d[1] = readl(&efuse->bits_63_32); + val->lock = readl(&efuse->bit64); + return 0; +} + +int mvebu_write_efuse(int nr, struct efuse_val *val) +{ + return prog_efuse(nr, val, ~0, ~0); +} + +int mvebu_lock_efuse(int nr) +{ + struct efuse_val val = { + .lock = 1, + }; + + return prog_efuse(nr, &val, 0, 0); +} + +/* + * wrapper funcs providing the fuse API + * + * we use the following mapping: + * "bank" -> eFuse line + * "word" -> 0: bits 0-31 + * 1: bits 32-63 + * 2: bit 64 (lock) + */ + +static struct efuse_val prog_val; +static int valid_prog_words; + +int fuse_read(u32 bank, u32 word, u32 *val) +{ + struct efuse_val fuse_line; + int res; + + if (bank < EFUSE_LINE_MIN || bank > EFUSE_LINE_MAX || word > 2) + return -EINVAL; + + res = mvebu_read_efuse(bank, &fuse_line); + if (res) + return res; + + if (word < 2) + *val = fuse_line.dwords.d[word]; + else + *val = fuse_line.lock; + + return res; +} + +int fuse_sense(u32 bank, u32 word, u32 *val) +{ + /* not supported */ + return -ENOSYS; +} + +int fuse_prog(u32 bank, u32 word, u32 val) +{ + int res = 0; + + /* + * NOTE: Fuse line should be written as whole. + * So how can we do that with this API? + * For now: remember values for word == 0 and word == 1 and write the + * whole line when word == 2. + * This implies that we always require all 3 fuse prog cmds (one for + * for each word) to write a single fuse line. + * Exception is a single write to word 2 which will lock the fuse line. + * + * Hope that will be OK. + */ + + if (bank < EFUSE_LINE_MIN || bank > EFUSE_LINE_MAX || word > 2) + return -EINVAL; + + if (word < 2) { + prog_val.dwords.d[word] = val; + valid_prog_words |= (1 << word); + } else if ((valid_prog_words & 3) == 0 && val) { + res = mvebu_lock_efuse(bank); + valid_prog_words = 0; + } else if ((valid_prog_words & 3) != 3 || !val) { + res = -EINVAL; + } else { + prog_val.lock = val != 0; + res = mvebu_write_efuse(bank, &prog_val); + valid_prog_words = 0; + } + + return res; +} + +int fuse_override(u32 bank, u32 word, u32 val) +{ + /* not supported */ + return -ENOSYS; +} diff --git a/arch/arm/mach-mvebu/include/mach/cpu.h b/arch/arm/mach-mvebu/include/mach/cpu.h index 66f7680fb3..d241eea956 100644 --- a/arch/arm/mach-mvebu/include/mach/cpu.h +++ b/arch/arm/mach-mvebu/include/mach/cpu.h @@ -36,7 +36,9 @@ enum cpu_target { CPU_TARGET_ETH01 = 0x7, CPU_TARGET_PCIE13 = 0x8, CPU_TARGET_SASRAM = 0x9, + CPU_TARGET_SATA01 = 0xa, /* A38X */ CPU_TARGET_NAND = 0xd, + CPU_TARGET_SATA23_DFX = 0xe, /* A38X */ }; enum cpu_attrib { diff --git a/arch/arm/mach-mvebu/include/mach/efuse.h b/arch/arm/mach-mvebu/include/mach/efuse.h new file mode 100644 index 0000000000..ef693e6749 --- /dev/null +++ b/arch/arm/mach-mvebu/include/mach/efuse.h @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2015 Reinhard Pfau <reinhard.pfau@gdsys.cc> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _MVEBU_EFUSE_H +#define _MVEBU_EFUSE_H + +#include <common.h> + +struct efuse_val { + union { + struct { + u8 d[8]; + } bytes; + struct { + u16 d[4]; + } words; + struct { + u32 d[2]; + } dwords; + }; + u32 lock; +}; + +#if defined(CONFIG_ARMADA_38X) + +enum efuse_line { + EFUSE_LINE_SECURE_BOOT = 24, + EFUSE_LINE_PUBKEY_DIGEST_0 = 26, + EFUSE_LINE_PUBKEY_DIGEST_1 = 27, + EFUSE_LINE_PUBKEY_DIGEST_2 = 28, + EFUSE_LINE_PUBKEY_DIGEST_3 = 29, + EFUSE_LINE_PUBKEY_DIGEST_4 = 30, + EFUSE_LINE_CSK_0_VALID = 31, + EFUSE_LINE_CSK_1_VALID = 32, + EFUSE_LINE_CSK_2_VALID = 33, + EFUSE_LINE_CSK_3_VALID = 34, + EFUSE_LINE_CSK_4_VALID = 35, + EFUSE_LINE_CSK_5_VALID = 36, + EFUSE_LINE_CSK_6_VALID = 37, + EFUSE_LINE_CSK_7_VALID = 38, + EFUSE_LINE_CSK_8_VALID = 39, + EFUSE_LINE_CSK_9_VALID = 40, + EFUSE_LINE_CSK_10_VALID = 41, + EFUSE_LINE_CSK_11_VALID = 42, + EFUSE_LINE_CSK_12_VALID = 43, + EFUSE_LINE_CSK_13_VALID = 44, + EFUSE_LINE_CSK_14_VALID = 45, + EFUSE_LINE_CSK_15_VALID = 46, + EFUSE_LINE_FLASH_ID = 47, + EFUSE_LINE_BOX_ID = 48, + + EFUSE_LINE_MIN = 0, + EFUSE_LINE_MAX = 63, +}; + +#endif + +int mvebu_efuse_init_hw(void); + +int mvebu_read_efuse(int nr, struct efuse_val *val); + +int mvebu_write_efuse(int nr, struct efuse_val *val); + +int mvebu_lock_efuse(int nr); + +#endif diff --git a/arch/arm/mach-mvebu/include/mach/soc.h b/arch/arm/mach-mvebu/include/mach/soc.h index 0f69f3341b..0900e4008c 100644 --- a/arch/arm/mach-mvebu/include/mach/soc.h +++ b/arch/arm/mach-mvebu/include/mach/soc.h @@ -67,6 +67,7 @@ #define MVEBU_REG_PCIE_BASE (MVEBU_REGISTER(0x40000)) #define MVEBU_AXP_USB_BASE (MVEBU_REGISTER(0x50000)) #define MVEBU_USB20_BASE (MVEBU_REGISTER(0x58000)) +#define MVEBU_REG_PCIE0_BASE (MVEBU_REGISTER(0x80000)) #define MVEBU_AXP_SATA_BASE (MVEBU_REGISTER(0xa0000)) #define MVEBU_SATA0_BASE (MVEBU_REGISTER(0xa8000)) #define MVEBU_NAND_BASE (MVEBU_REGISTER(0xd0000)) diff --git a/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.c b/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.c index 98c447ce94..9e5b647e25 100644 --- a/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.c +++ b/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.c @@ -13,6 +13,11 @@ #include "ctrl_pex.h" #include "sys_env_lib.h" +__weak void board_pex_config(void) +{ + /* nothing in this weak default implementation */ +} + int hws_pex_config(const struct serdes_map *serdes_map, u8 count) { u32 pex_idx, tmp, next_busno, first_busno, temp_pex_reg, @@ -77,6 +82,9 @@ int hws_pex_config(const struct serdes_map *serdes_map, u8 count) /* Support gen1/gen2 */ DEBUG_INIT_FULL_S("Support gen1/gen2\n"); + + board_pex_config(); + next_busno = 0; mdelay(150); diff --git a/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.h b/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.h index 5f7e2c7aa2..ca8a4d206a 100644 --- a/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.h +++ b/arch/arm/mach-mvebu/serdes/a38x/ctrl_pex.h @@ -83,4 +83,6 @@ int pex_local_bus_num_set(u32 pex_if, u32 bus_num); int pex_local_dev_num_set(u32 pex_if, u32 dev_num); u32 pex_config_read(u32 pex_if, u32 bus, u32 dev, u32 func, u32 reg_off); +void board_pex_config(void); + #endif diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c index e1c9cdba50..3cf02a54ce 100644 --- a/arch/arm/mach-mvebu/spl.c +++ b/arch/arm/mach-mvebu/spl.c @@ -13,8 +13,6 @@ #include <asm/arch/cpu.h> #include <asm/arch/soc.h> -DECLARE_GLOBAL_DATA_PTR; - static u32 get_boot_device(void) { u32 val; |