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https://github.com/AsahiLinux/u-boot
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With new SMP-enabled CPUs with ARC HS38 cores and corresponding support in Linux kernel it's required to add basic SMP support in U-Boot. Currently we assume the one and only core starts execution after power-on. So most of things in U-Boot is handled in UP mode. But when U-Boot is used for loading and starting Linux kernel right before jumping to kernel's entry point U-Boot: [1] Sets all slave cores to jump to the same address [kernel's entry point] [2] Really starts all slav cores In ARC's implemetation of SMP in Linux kernel all cores are supposed to run the same start-up code. But only core with ID 0 (master core) processes further while others are looping waiting for master core to complete some initialization. That means it's safe to un-pause slave cores and let them execute kernel - they will wait for master anyway. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> |
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| .. | ||
| _millicodethunk.S | ||
| bootm.c | ||
| cache.c | ||
| cpu.c | ||
| init_helpers.c | ||
| interrupts.c | ||
| ints_low.S | ||
| libgcc2.c | ||
| libgcc2.h | ||
| Makefile | ||
| memcmp.S | ||
| memcpy-700.S | ||
| memset.S | ||
| relocate.c | ||
| reset.c | ||
| sections.c | ||
| start.S | ||
| strchr-700.S | ||
| strcmp.S | ||
| strcpy-700.S | ||
| strlen.S | ||
| timer.c | ||