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https://github.com/brain-hackers/u-boot-brain
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![]() Use the MMU hardware to set up 1:1 mappings between physical and virtual addresses. This allows us to bypass the cache when accessing the flash without having to do any physical-to-virtual address mapping in the CFI driver. The virtual memory mappings are defined at compile time through a sorted array of virtual memory range objects. When a TLB miss exception happens, the exception handler does a binary search through the array until it finds a matching entry and loads it into the TLB. The u-boot image itself is covered by a fixed TLB entry which is never replaced. This makes the 'saveenv' command work again on ATNGW100 and other boards using the CFI driver, hopefully without breaking any rules. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> |
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.. | ||
at32ap700x | ||
cache.c | ||
config.mk | ||
cpu.c | ||
exception.c | ||
hsdramc1.h | ||
hsdramc.c | ||
hsmc3.h | ||
interrupts.c | ||
Makefile | ||
pio2.h | ||
portmux-gpio.c | ||
portmux-pio.c | ||
start.S |