[sw,rom_ext] Add dual-redundancy boot_data writing algorithm #28967
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This commit introduces a new dual-redundancy scheme for writing boot data to flash. Instead of the legacy circular writing scheme, which is now renamed to `boot_data_write_old`, the new `boot_data_write` function ensures that a valid and consistent entry is written to the first index of both boot data pages. Key changes: - Renamed the legacy `boot_data_write` to `boot_data_write_old`. - Implemented the new `boot_data_write` using a dual-redundancy algorithm. - Added `boot_data_redundancy_check` to verify consistency between the two pages. - Updated `rom_ext_start` to automatically repair boot data using the redundancy check. Change-Id: Ic31d8c3c778397feb8eb2991ca9e670917047633 Signed-off-by: Yi-Hsuan Deng <yhdeng@google.com>
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This commit introduces a new dual-redundancy scheme for writing boot data to flash. Instead of the legacy circular writing scheme, which is now renamed to
boot_data_write_old, the newboot_data_writefunction ensures that a valid and consistent entry is written to the first index of both boot data pages.Key changes:
boot_data_writetoboot_data_write_old(for compatibility testing).boot_data_writeusing a dual-redundancy algorithm.boot_data_redundancy_checkto verify consistency between the two pages.rom_ext_startto automatically repair boot data using the redundancy check.Size difference:
boot_data_writeCoverage:
Full coverage of the added code is verified manually with the following command.