1 /* SPDX-License-Identifier: BSD-3-Clause */
3 /******************************************************************************
5 * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
7 ******************************************************************************/
11 #include "flashloader.h"
14 /* Array holding erased state of the flash sectors. */
15 static bool g_is_erased
[FLASH_MAX_SECTOR_COUNT
];
17 extern uint8_t g_retain_buf
[];
19 uint32_t flashloader_init(struct flash_params
*params
, uint8_t *buf1
,
22 /* Initialize params buffers */
23 memset((void *)params
, 0, 2 * sizeof(struct flash_params
));
24 params
[0].buf_addr
= (uint32_t)buf1
;
25 params
[1].buf_addr
= (uint32_t)buf2
;
27 /* Mark all sectors at "not erased" */
28 memset(g_is_erased
, false, sizeof(g_is_erased
));
33 uint32_t flashloader_erase_and_program(uint8_t *src
, uint32_t address
,
36 if (byte_count
> BUFFER_LEN
)
37 return STATUS_FAILED_INVALID_ARGUMENTS
;
39 /* Erase affected sectors */
40 uint32_t status
= flashloader_erase_sectors(address
, byte_count
);
42 if (status
!= STATUS_OK
)
46 status
= flashloader_program(src
, address
, byte_count
);
51 uint32_t flashloader_program_with_retain(uint8_t *src
, uint32_t address
,
54 #if (BUFFER_LEN > FLASH_ERASE_SIZE)
55 #error Buffer size cannot be larger than the flash sector size!
58 uint32_t first_sector_idx
;
59 uint32_t last_sector_idx
;
60 uint32_t status
= STATUS_OK
;
63 first_sector_idx
= flashloader_address_to_sector(address
);
64 last_sector_idx
= flashloader_address_to_sector(address
+ byte_count
- 1);
66 /* Mark all sectors as "not erased" before starting */
67 memset(g_is_erased
, false, sizeof(g_is_erased
));
69 uint32_t sec_offset
= address
% FLASH_ERASE_SIZE
;
71 uint32_t src_offset
= 0;
73 for (i
= first_sector_idx
; i
<= last_sector_idx
; i
++) {
75 /* Chop off at sector boundary if data goes into the next sector. */
76 curr_count
= byte_count
;
77 if ((address
+ byte_count
) > ((i
+1) * FLASH_ERASE_SIZE
))
78 curr_count
-= (address
+ byte_count
) % FLASH_ERASE_SIZE
;
80 /* Copy flash sector to retain buffer */
81 memcpy(g_retain_buf
, (void *)(i
* FLASH_ERASE_SIZE
), FLASH_ERASE_SIZE
);
83 /* Copy data buffer to retain buffer */
84 memcpy(&g_retain_buf
[sec_offset
], &src
[src_offset
], curr_count
);
86 /* Erase and program from retain buffer */
87 status
= flashloader_erase_and_program(g_retain_buf
,
88 (i
* FLASH_ERASE_SIZE
), FLASH_ERASE_SIZE
);
89 if (status
!= STATUS_OK
)
92 address
+= curr_count
;
93 sec_offset
= address
% FLASH_ERASE_SIZE
;
94 byte_count
-= curr_count
;
95 src_offset
+= curr_count
;
101 uint32_t flashloader_erase_all(void)
103 if (flash_bank_erase(true) != FAPI_STATUS_SUCCESS
)
104 return STATUS_FAILED_ERASE_ALL
;
106 memset(g_is_erased
, true, sizeof(g_is_erased
));
111 uint32_t flashloader_erase_sectors(uint32_t address
, uint32_t byte_count
)
113 uint32_t first_sector_idx
;
114 uint32_t last_sector_idx
;
118 /* Floor address to the start of the sector and convert to sector number */
119 first_sector_idx
= flashloader_address_to_sector(address
);
120 last_sector_idx
= flashloader_address_to_sector(address
+ byte_count
- 1);
122 /* Erase given sector(s) */
123 for (idx
= first_sector_idx
; idx
<= last_sector_idx
; idx
++) {
125 /* Only erase sectors that haven't already been erased */
126 if (g_is_erased
[idx
] == false) {
127 status
= flash_sector_erase(idx
* FLASH_ERASE_SIZE
);
128 if (status
!= FAPI_STATUS_SUCCESS
) {
129 status
= (STATUS_FAILED_SECTOR_ERASE
|
130 ((idx
<< STATUS_EXT_INFO_S
) & STATUS_EXT_INFO_M
) |
131 ((status
<< STATUS_ROM_CODE_S
) & STATUS_ROM_CODE_M
));
134 g_is_erased
[idx
] = true;
141 uint32_t flashloader_program(uint8_t *src
, uint32_t address
,
144 uint32_t status
= flash_program(src
, address
, byte_count
);
145 if (status
!= FAPI_STATUS_SUCCESS
) {
146 status
= (STATUS_FAILED_PROGRAM
|
147 ((status
<< STATUS_ROM_CODE_S
) & STATUS_ROM_CODE_M
));
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