diff options
| -rw-r--r-- | target/linux/ar71xx/patches-3.3/620-MIPS-ath79-OTP-support.patch | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/620-MIPS-ath79-OTP-support.patch b/target/linux/ar71xx/patches-3.3/620-MIPS-ath79-OTP-support.patch new file mode 100644 index 000000000..096329291 --- /dev/null +++ b/target/linux/ar71xx/patches-3.3/620-MIPS-ath79-OTP-support.patch @@ -0,0 +1,166 @@ +--- a/arch/mips/ath79/dev-wmac.c ++++ b/arch/mips/ath79/dev-wmac.c +@@ -121,6 +121,137 @@ static void ar934x_wmac_setup(void) + ath79_wmac_data.is_clk_25mhz = true; + } + ++static bool __init ++ar93xx_wmac_otp_read_word(void __iomem *base, int addr, u32 *data) ++{ ++ int timeout = 1000; ++ u32 val; ++ ++ __raw_readl(base + AR9300_OTP_BASE + (4 * addr)); ++ while (timeout--) { ++ val = __raw_readl(base + AR9300_OTP_STATUS); ++ if ((val & AR9300_OTP_STATUS_TYPE) == AR9300_OTP_STATUS_VALID) ++ break; ++ ++ udelay(10); ++ } ++ ++ if (!timeout) ++ return false; ++ ++ *data = __raw_readl(base + AR9300_OTP_READ_DATA); ++ return true; ++} ++ ++static bool __init ++ar93xx_wmac_otp_read(void __iomem *base, int addr, u8 *dest, int len) ++{ ++ u32 data; ++ int i; ++ ++ for (i = 0; i < len; i++) { ++ int offset = 8 * ((addr - i) % 4); ++ ++ if (!ar93xx_wmac_otp_read_word(base, (addr - i) / 4, &data)) ++ return false; ++ ++ dest[i] = (data >> offset) & 0xff; ++ } ++ ++ return true; ++} ++ ++static bool __init ++ar93xx_wmac_otp_uncompress(void __iomem *base, int addr, int len, u8 *dest, ++ int dest_start, int dest_len) ++{ ++ int dest_bytes = 0; ++ int offset = 0; ++ int end = addr - len; ++ u8 hdr[2]; ++ ++ while (addr > end) { ++ if (!ar93xx_wmac_otp_read(base, addr, hdr, 2)) ++ return false; ++ ++ addr -= 2; ++ offset += hdr[0]; ++ ++ if (offset <= dest_start + dest_len && ++ offset + len >= dest_start) { ++ int data_offset = 0; ++ int dest_offset = 0; ++ int copy_len; ++ ++ if (offset < dest_start) ++ data_offset = dest_start - offset; ++ else ++ dest_offset = offset - dest_start; ++ ++ copy_len = len - data_offset; ++ if (copy_len > dest_len - dest_offset) ++ copy_len = dest_len - dest_offset; ++ ++ ar93xx_wmac_otp_read(base, addr - data_offset, ++ dest + dest_offset, ++ copy_len); ++ ++ dest_bytes += copy_len; ++ } ++ addr -= hdr[1]; ++ } ++ return !!dest_bytes; ++} ++ ++bool __init ar93xx_wmac_read_mac_address(u8 *dest) ++{ ++ void __iomem *base; ++ bool ret = false; ++ int addr = 0x1ff; ++ unsigned int len; ++ u32 hdr_u32; ++ u8 *hdr = (u8 *) &hdr_u32; ++ u8 mac[6] = { 0x00, 0x02, 0x03, 0x04, 0x05, 0x06 }; ++ int mac_start = 2, mac_end = 8; ++ ++ BUG_ON(!soc_is_ar933x() && !soc_is_ar934x()); ++ base = ioremap_nocache(AR933X_WMAC_BASE, AR933X_WMAC_SIZE); ++ while (addr > sizeof(hdr)) { ++ if (!ar93xx_wmac_otp_read(base, addr, hdr, sizeof(hdr))) ++ break; ++ ++ if (hdr_u32 == 0 || hdr_u32 == ~0) ++ break; ++ ++ len = (hdr[1] << 4) | (hdr[2] >> 4); ++ addr -= 4; ++ ++ switch (hdr[0] >> 5) { ++ case 0: ++ if (len < mac_end) ++ break; ++ ++ ar93xx_wmac_otp_read(base, addr - mac_start, mac, 6); ++ ret = true; ++ break; ++ case 3: ++ ret |= ar93xx_wmac_otp_uncompress(base, addr, len, mac, ++ mac_start, 6); ++ break; ++ default: ++ break; ++ } ++ ++ addr -= len + 2; ++ } ++ ++ iounmap(base); ++ if (ret) ++ memcpy(dest, mac, 6); ++ ++ return ret; ++} ++ + void __init ath79_register_wmac(u8 *cal_data, u8 *mac_addr) + { + if (soc_is_ar913x()) +--- a/arch/mips/ath79/dev-wmac.h ++++ b/arch/mips/ath79/dev-wmac.h +@@ -13,5 +13,6 @@ + #define _ATH79_DEV_WMAC_H + + void ath79_register_wmac(u8 *cal_data, u8 *mac_addr); ++bool ar93xx_wmac_read_mac_address(u8 *dest); + + #endif /* _ATH79_DEV_WMAC_H */ +--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h ++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h +@@ -78,6 +78,14 @@ + #define AR934X_EHCI_BASE 0x1b000000 + #define AR934X_EHCI_SIZE 0x1000 + ++#define AR9300_OTP_BASE 0x14000 ++#define AR9300_OTP_STATUS 0x15f18 ++#define AR9300_OTP_STATUS_TYPE 0x7 ++#define AR9300_OTP_STATUS_VALID 0x4 ++#define AR9300_OTP_STATUS_ACCESS_BUSY 0x2 ++#define AR9300_OTP_STATUS_SM_BUSY 0x1 ++#define AR9300_OTP_READ_DATA 0x15f1c ++ + /* + * DDR_CTRL block + */ |