From 29a3a09f9155e5de69d6d2a4bf582a9e09b8e0a4 Mon Sep 17 00:00:00 2001 From: Nikolai Artemiev Date: Mon, 21 Nov 2022 19:29:57 +1100 Subject: writeprotect: Add function to get register values and WP bit masks Add a new wp_cfg_to_reg_values() function that takes a generic wp_cfg instance and returns the chip-specific values that need to be written to the chip's registers to enable the specified protection range/mode. The function returns three values for each chip register: - reg_values[reg] - Value writeprotect will write to reg - bit_masks[reg] - Bit mask for WP-related bits in reg - write_masks[reg] - Bit mask for writable WP-related bits in reg (i.e. the ones writeprotect will try to write) BUG=b:260019525,b:259013033,260020006 BRANCH=none TEST=ninja test Change-Id: Ib2a47153b230c9f82bb4eca357c335f2abbacc20 Signed-off-by: Nikolai Artemiev Reviewed-on: https://review.coreboot.org/c/flashrom/+/69847 Reviewed-by: Edward O'Callaghan Tested-by: build bot (Jenkins) Reviewed-by: Sergii Dmytruk --- include/writeprotect.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/writeprotect.h b/include/writeprotect.h index 12926c4d..7ceed079 100644 --- a/include/writeprotect.h +++ b/include/writeprotect.h @@ -89,4 +89,10 @@ enum flashrom_wp_result wp_get_available_ranges(struct flashrom_wp_ranges **, st /* Checks if writeprotect functions can be used with the current flash/programmer */ bool wp_operations_available(struct flashrom_flashctx *); +/* + * Converts a writeprotect config to register values and masks that indicate which register bits affect WP state. + * reg_values, bit_masks, and write_masks must all have length of at least MAX_REGISTERS. + */ +enum flashrom_wp_result wp_cfg_to_reg_values(uint8_t *reg_values, uint8_t *bit_masks, uint8_t *write_masks, struct flashrom_flashctx *, const struct flashrom_wp_cfg *); + #endif /* !__WRITEPROTECT_H__ */ -- cgit v1.2.3