* (C) Copyright 2009
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
+ * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __CFI_FLASH_H__
#define AMD_CMD_UNLOCK_ACK 0x55
#define AMD_CMD_WRITE_TO_BUFFER 0x25
#define AMD_CMD_WRITE_BUFFER_CONFIRM 0x29
+#define AMD_CMD_SET_PPB_ENTRY 0xC0
+#define AMD_CMD_SET_PPB_EXIT_BC1 0x90
+#define AMD_CMD_SET_PPB_EXIT_BC2 0x00
+#define AMD_CMD_PPB_UNLOCK_BC1 0x80
+#define AMD_CMD_PPB_UNLOCK_BC2 0x30
+#define AMD_CMD_PPB_LOCK_BC1 0xA0
+#define AMD_CMD_PPB_LOCK_BC2 0x00
#define AMD_STATUS_TOGGLE 0x40
#define AMD_STATUS_ERROR 0x20
} cfiword_t;
/* CFI standard query structure */
+/* The offsets and sizes of this packed structure members correspond
+ * to the actual layout in CFI Flash chips. Some 16- and 32-bit members
+ * are unaligned and must be accessed with explicit unaligned access macros.
+ */
struct cfi_qry {
u8 qry[3];
- u16 p_id;
- u16 p_adr;
- u16 a_id;
- u16 a_adr;
+ u16 p_id; /* unaligned */
+ u16 p_adr; /* unaligned */
+ u16 a_id; /* unaligned */
+ u16 a_adr; /* unaligned */
u8 vcc_min;
u8 vcc_max;
u8 vpp_min;
u8 block_erase_timeout_max;
u8 chip_erase_timeout_max;
u8 dev_size;
- u16 interface_desc;
- u16 max_buf_write_size;
+ u16 interface_desc; /* aligned */
+ u16 max_buf_write_size; /* aligned */
u8 num_erase_regions;
- u32 erase_region_info[NUM_ERASE_REGIONS];
+ u32 erase_region_info[NUM_ERASE_REGIONS]; /* unaligned */
} __attribute__((packed));
struct cfi_pri_hdr {
void flash_write_cmd(flash_info_t * info, flash_sect_t sect,
uint offset, u32 cmd);
+phys_addr_t cfi_flash_bank_addr(int i);
+unsigned long cfi_flash_bank_size(int i);
+void flash_cmd_reset(flash_info_t *info);
+
+#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
+void flash_write8(u8 value, void *addr);
+void flash_write16(u16 value, void *addr);
+void flash_write32(u32 value, void *addr);
+void flash_write64(u64 value, void *addr);
+u8 flash_read8(void *addr);
+u16 flash_read16(void *addr);
+u32 flash_read32(void *addr);
+u64 flash_read64(void *addr);
+#endif
#endif /* __CFI_FLASH_H__ */