diff options
| -rw-r--r-- | payloads/libpayload/arch/arm64/mmu.c | 5 | ||||
| -rw-r--r-- | payloads/libpayload/include/arm64/arch/mmu.h | 8 |
2 files changed, 13 insertions, 0 deletions
diff --git a/payloads/libpayload/arch/arm64/mmu.c b/payloads/libpayload/arch/arm64/mmu.c index cb0081b789..bc4c233479 100644 --- a/payloads/libpayload/arch/arm64/mmu.c +++ b/payloads/libpayload/arch/arm64/mmu.c @@ -705,3 +705,8 @@ void mmu_presysinfo_enable(void) mmu_init(&usedmem_ranges); mmu_enable(); } + +const struct mmu_ranges *mmu_get_used_ranges(void) +{ + return &usedmem_ranges; +} diff --git a/payloads/libpayload/include/arm64/arch/mmu.h b/payloads/libpayload/include/arm64/arch/mmu.h index 5a1dd98a59..2b1e9e120c 100644 --- a/payloads/libpayload/include/arm64/arch/mmu.h +++ b/payloads/libpayload/include/arm64/arch/mmu.h @@ -194,4 +194,12 @@ struct mmu_memrange* mmu_init_ranges_from_sysinfo(struct memrange *cb_ranges, */ void mmu_presysinfo_memory_used(uint64_t base, uint64_t size); void mmu_presysinfo_enable(void); + +/* + * Functions for exposing the used memory ranges to payloads. The ranges contain + * all used memory ranges that are actually used by payload. i.e. _start -> _end + * in linker script, the coreboot tables and framebuffer/DMA allocated in MMU + * initialization. + */ +const struct mmu_ranges *mmu_get_used_ranges(void); #endif // __ARCH_ARM64_MMU_H__ |