7695bb7afe
What this change does: 1) Initialize limited page tables as soon as we jump into libpayload. Basically two ranges are initialized. One is for the BASE_ADDRESS and other is for the coreboot_tables. With page tables initialized and MMU enabled, we jump into code to parse coreboot tables. 2) Once coreboot tables are parsed and we have complete picture of the memory, we perform a complete page table initialzation and enable MMU and then jump to payload. Additionally, we also: 1) Initialize DMA memory on our own depending upon the memory map. It ensures that the DMA buffer is placed in 32-bit memory. CQ-DEPEND=CL:216826 BUG=chrome-os-partner:31634 BRANCH=None TEST=Compiles successfully and we are able to start execution of libpayload in EL2 and reach kernel login prompt Change-Id: Ie0f47b7759d4ac65a6920f7f2f7502b889afda6d Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://chromium-review.googlesource.com/216824 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: Furquan Shaikh <furquan@chromium.org> Commit-Queue: Furquan Shaikh <furquan@chromium.org> |
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| .. | ||
| lib | ||
| cache.c | ||
| Config.in | ||
| coreboot.c | ||
| cpu.S | ||
| dummy_media.c | ||
| exception.c | ||
| exception_asm.S | ||
| gdb.c | ||
| head.S | ||
| libpayload.ldscript | ||
| main.c | ||
| Makefile.inc | ||
| memcpy.S | ||
| memmove.S | ||
| memset.S | ||
| mmu.c | ||
| selfboot.c | ||
| sysinfo.c | ||
| timer.c | ||
| util.S | ||
| virtual.c | ||