This adds the necessary data for handling eFuse on the rk3328.
Signed-off-by: Finley Xiao finley.xiao@rock-chips.com --- drivers/misc/rockchip-efuse.c | 69 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+)
diff --git a/drivers/misc/rockchip-efuse.c b/drivers/misc/rockchip-efuse.c index 175a7fe2f5..68762d3f6f 100644 --- a/drivers/misc/rockchip-efuse.c +++ b/drivers/misc/rockchip-efuse.c @@ -13,6 +13,7 @@ #include <dm.h> #include <linux/bitops.h> #include <linux/delay.h> +#include <malloc.h> #include <misc.h>
#define RK3288_A_SHIFT 6 @@ -24,6 +25,15 @@ #define RK3288_STROBE BIT(1) #define RK3288_CSB BIT(0)
+#define RK3328_INT_STATUS 0x0018 +#define RK3328_DOUT 0x0020 +#define RK3328_AUTO_CTRL 0x0024 +#define RK3328_INT_FINISH BIT(0) +#define RK3328_AUTO_ENB BIT(0) +#define RK3328_AUTO_RD BIT(1) +#define RK3328_NO_SECURE_BYTES 32 +#define RK3328_SECURE_BYTES 96 + #define RK3399_A_SHIFT 16 #define RK3399_A_MASK 0x3ff #define RK3399_NFUSES 32 @@ -47,6 +57,10 @@ struct rockchip_efuse_regs { u32 jtag_pass; /* 0x10 JTAG password */ u32 strobe_finish_ctrl; /* 0x14 efuse strobe finish control register */ + u32 int_status;/* 0x18 */ + u32 reserved; /* 0x1c */ + u32 dout2; /* 0x20 */ + u32 auto_ctrl; /* 0x24 */ };
struct rockchip_efuse_platdata { @@ -138,6 +152,57 @@ static int rockchip_rk3288_efuse_read(struct udevice *dev, int offset, return 0; }
+static int rockchip_rk3328_efuse_read(struct udevice *dev, int offset, + void *buf, int size) +{ + struct rockchip_efuse_platdata *plat = dev_get_platdata(dev); + struct rockchip_efuse_regs *efuse = + (struct rockchip_efuse_regs *)plat->base; + unsigned int addr_start, addr_end, addr_offset, addr_len; + u32 out_value, status; + u8 *buffer; + int ret = 0, i = 0, j = 0; + + /* Max non-secure Byte */ + if (size > RK3328_NO_SECURE_BYTES) + size = RK3328_NO_SECURE_BYTES; + + /* 128 Byte efuse, 96 Byte for secure, 32 Byte for non-secure */ + offset += RK3328_SECURE_BYTES; + addr_start = rounddown(offset, RK3399_BYTES_PER_FUSE) / + RK3399_BYTES_PER_FUSE; + addr_end = roundup(offset + size, RK3399_BYTES_PER_FUSE) / + RK3399_BYTES_PER_FUSE; + addr_offset = offset % RK3399_BYTES_PER_FUSE; + addr_len = addr_end - addr_start; + + buffer = calloc(1, sizeof(*buffer) * addr_len * RK3399_BYTES_PER_FUSE); + if (!buffer) + return -ENOMEM; + + for (j = 0; j < addr_len; j++) { + writel(RK3328_AUTO_RD | RK3328_AUTO_ENB | + ((addr_start++ & RK3399_A_MASK) << RK3399_A_SHIFT), + &efuse->auto_ctrl); + udelay(5); + status = readl(&efuse->int_status); + if (!(status & RK3328_INT_FINISH)) { + ret = -EIO; + goto err; + } + out_value = readl(&efuse->dout2); + writel(RK3328_INT_FINISH, &efuse->int_status); + + memcpy(&buffer[i], &out_value, RK3399_BYTES_PER_FUSE); + i += RK3399_BYTES_PER_FUSE; + } + memcpy(buf, buffer + addr_offset, size); +err: + free(buffer); + + return ret; +} + static int rockchip_rk3399_efuse_read(struct udevice *dev, int offset, void *buf, int size) { @@ -224,6 +289,10 @@ static const struct udevice_id rockchip_efuse_ids[] = { .data = (ulong)&rockchip_rk3288_efuse_read, }, { + .compatible = "rockchip,rk3328-efuse", + .data = (ulong)&rockchip_rk3328_efuse_read, + }, + { .compatible = "rockchip,rk3399-efuse", .data = (ulong)&rockchip_rk3399_efuse_read, },