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risc-v/mpfs: Add error handling for PMP conf #263

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Jun 5, 2024
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risc-v/mpfs: Add error handling for PMP conf #263

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3 changes: 2 additions & 1 deletion arch/risc-v/src/mpfs/Kconfig
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Expand Up @@ -52,7 +52,8 @@ config MPFS_BOARD_PMP
default n
---help---
If true, the board must provide "mpfs_board_pmp_setup" for PMP
configuration. If false, set ALL memory accessible for every
configuration and "mpfs_board_pmp_error" for PMP error handling.
If false, set ALL memory accessible for every
configured HART. Only the bootloader should do this.

config MPFS_OPENSBI
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1 change: 1 addition & 0 deletions arch/risc-v/src/mpfs/mpfs_entrypoints.c
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Expand Up @@ -107,6 +107,7 @@ void mpfs_jump_to_app(void)
"la sp, g_mpfs_boot_stacks\n" /* Stack area base */
"add sp, sp, t0\n" /* Set stack pointer */
"call mpfs_board_pmp_setup\n" /* Run PMP configuration */
"bne a0, x0, mpfs_board_pmp_error\n" /* If ret != 0, jump to errhan */
"csrr a0, mhartid\n" /* Restore hartid */
#else
"li t0, -1\n" /* Open the whole SoC */
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