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Fix overflow in SPI memory when writing default key dictionnaries.

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Boundaries were defined in the memory layout but weren't enforced
by the client, causing an overflow when trying to load a
dictionnary that was too big.
It's too hard to enforce it on the ARM side as the command is a
generic write.
Now that limits are defined, also outputs them as part of the
`hw status` command.
This commit is contained in:
Jean-Michel Picod 2022-11-24 03:16:58 +01:00
commit 1adec4dfb2
3 changed files with 30 additions and 15 deletions
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12
include/pmflash.h
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@ -65,17 +65,23 @@
// Reserved space for T55XX PWD = 4 kb
#ifndef DEFAULT_T55XX_KEYS_OFFSET
# define DEFAULT_T55XX_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x3000)
# define DEFAULT_T55XX_KEYS_LEN (0x1000)
# define DEFAULT_T55XX_KEYS_OFFSET (T55XX_CONFIG_OFFSET - DEFAULT_T55XX_KEYS_LEN)
# define DEFAULT_T55XX_KEYS_MAX ((DEFAULT_T55XX_KEYS_LEN - 2) / 4)
#endif
// Reserved space for iClass keys = 4 kb
#ifndef DEFAULT_ICLASS_KEYS_OFFSET
# define DEFAULT_ICLASS_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x4000)
# define DEFAULT_ICLASS_KEYS_LEN (0x1000)
# define DEFAULT_ICLASS_KEYS_OFFSET (DEFAULT_T55XX_KEYS_OFFSET - DEFAULT_ICLASS_KEYS_LEN)
# define DEFAULT_ICLASS_KEYS_MAX ((DEFAULT_ICLASS_KEYS_LEN - 2) / 8)
#endif
// Reserved space for MIFARE Keys = 8 kb
#ifndef DEFAULT_MF_KEYS_OFFSET
# define DEFAULT_MF_KEYS_OFFSET (FLASH_MEM_MAX_4K_SECTOR - 0x6000)
# define DEFAULT_MF_KEYS_LEN (0x2000)
# define DEFAULT_MF_KEYS_OFFSET (DEFAULT_ICLASS_KEYS_OFFSET - DEFAULT_MF_KEYS_LEN)
# define DEFAULT_MF_KEYS_MAX ((DEFAULT_MF_KEYS_LEN - 2) / 6)
#endif
// RDV40, validation structure to help identifying that client/firmware is talking with RDV40