misc: nuvoton: Add NPCM7xx otp controller driver

Add Nuvoton BMC npcm750 otp driver

Signed-off-by: Jim Liu <[email protected]>

1 files changed, 90 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-npcm7xx/otp.h b/arch/arm/include/asm/arch-npcm7xx/otp.h
new file mode 100644
index 00000000000..11d1e8550c9
--- /dev/null
+++ b/arch/arm/include/asm/arch-npcm7xx/otp.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef _NPCM_OTP_H_
+#define _NPCM_OTP_H_
+
+#ifdef CONFIG_ARCH_NPCM8XX
+enum {
+	NPCM_KEY_SA    = 0,
+	NPCM_FUSE_SA   = 0,
+	NPCM_NUM_OF_SA   = 1
+};
+#else
+enum {
+	NPCM_KEY_SA    = 0,
+	NPCM_FUSE_SA   = 1,
+	NPCM_NUM_OF_SA = 2
+};
+#endif
+
+struct npcm_otp_regs {
+	unsigned int fst;
+	unsigned int faddr;
+	unsigned int fdata;
+	unsigned int fcfg;
+	unsigned int fustrap_fkeyind;
+	unsigned int fctl;
+};
+
+#define FST_RDY                 BIT(0)
+#define FST_RDST                BIT(1)
+#define FST_RIEN                BIT(2)
+
+#ifdef CONFIG_ARCH_NPCM8XX
+#define FADDR_BYTEADDR(addr)        ((addr) << 3)
+#define FADDR_BITPOS(pos)           ((pos) << 0)
+#define FADDR_VAL(addr, pos)        (FADDR_BITPOS(pos) | FADDR_BYTEADDR(addr))
+#define FADDR_IN_PROG               BIT(16)
+#else
+#define FADDR_BYTEADDR(addr)    ((addr) << 0)
+#define FADDR_BITPOS(pos)       ((pos) << 10)
+#define FADDR_VAL(addr, pos)    (FADDR_BYTEADDR(addr) | FADDR_BITPOS(pos))
+#define FADDR_IN_PROG               BIT(16)
+#endif
+
+#define FDATA_MASK              (0xff)
+
+#define FUSTRAP_O_SECBOOT       BIT(23)
+
+#define FCFG_FDIS               BIT(31)
+
+#define FKEYIND_KVAL            BIT(0)
+#define FKEYIND_KSIZE_MASK      (0x00000070)
+#define FKEYIND_KSIZE_128       (0x40)
+#define FKEYIND_KSIZE_192       (0x50)
+#define FKEYIND_KSIZE_256       (0x60)
+#define FKEYIND_KIND_MASK       (0x000c0000)
+#define FKEYIND_KIND_KEY(indx)  ((indx) << 18)
+
+// Program cycle initiation values (sequence of two adjacent writes)
+#define PROGRAM_ARM             0x1
+#define PROGRAM_INIT            0xBF79E5D0
+
+#define OTP2_BASE               0xF018A000
+#define FUSTRAP                 (OTP2_BASE + 0x10)
+
+// Read cycle initiation value
+#define READ_INIT               0x02
+
+// Value to clean FDATA contents
+#define FDATA_CLEAN_VALUE       0x01
+
+#ifdef CONFIG_ARCH_NPCM8XX
+#define NPCM_OTP_ARR_BYTE_SIZE        8192
+#else
+#define NPCM_OTP_ARR_BYTE_SIZE        1024
+#endif
+
+#define MIN_PROGRAM_PULSES               4
+#define MAX_PROGRAM_PULSES               20
+#define NPCM_OTP_ARR_BYTE_SIZE        1024
+
+int fuse_prog_image(u32 bank, uintptr_t address);
+int  fuse_program_data(u32 bank, u32 word, u8 *data, u32 size);
+int  npcm_otp_select_key(u8 key_index);
+bool npcm_otp_is_fuse_array_disabled(u32 arr);
+void npcm_otp_nibble_parity_ecc_encode(u8 *datain, u8 *dataout, u32 size);
+void npcm_otp_majority_rule_ecc_encode(u8 *datain, u8 *dataout, u32 size);
+void npcm_arch_preboot_os(void);
+
+#endif