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RISC-V: Use Linux logical CPU number instead of hartid

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Setup the cpu_logical_map during boot. Moreover, every SBI call
and PLIC context are based on the physical hartid. Use the logical
CPU to hartid mapping to pass correct hartid to respective functions.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Atish Patra
2018-10-02 12:15:05 -07:00
committed by Palmer Dabbelt
parent 6825c7a80f
commit f99fb607fb
8 changed files with 71 additions and 32 deletions
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4
arch/riscv/kernel/head.S
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@@ -47,6 +47,8 @@ ENTRY(_start)
/* Save hart ID and DTB physical address */
mv s0, a0
mv s1, a1
la a2, boot_cpu_hartid
REG_S a0, (a2)
/* Initialize page tables and relocate to virtual addresses */
la sp, init_thread_union + THREAD_SIZE
@@ -55,7 +57,7 @@ ENTRY(_start)
/* Restore C environment */
la tp, init_task
sw s0, TASK_TI_CPU(tp)
sw zero, TASK_TI_CPU(tp)
la sp, init_thread_union
li a0, ASM_THREAD_SIZE