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RISC-V: provide the correct value for kernstart

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pmap_bootstrap() expects the kernel's physical load address, but we have
been providing the start of physical memory. This had the nice effect of
protecting the memory used by the SBI runtime firmware, but now that we
have alternate means of achieving that, we should provide the correct
value. This will free up any memory between the SBI firmware and the
kernel for allocation.

Reviewed by:	markj
Differential Revision:	https://reviews.freebsd.org/D24156
This commit is contained in:
Mitchell Horne 2020-04-19 00:34:49 +00:00
parent f2566be5ce
commit 0d26dae5c3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=360085
1 changed files with 1 additions and 1 deletions
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2
sys/riscv/riscv/machdep.c
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@ -851,7 +851,7 @@ initriscv(struct riscv_bootparams *rvbp)
/* Bootstrap enough of pmap to enter the kernel proper */
kernlen = (lastaddr - KERNBASE);
pmap_bootstrap(rvbp->kern_l1pt, mem_regions[0].mr_start, kernlen);
pmap_bootstrap(rvbp->kern_l1pt, rvbp->kern_phys, kernlen);
#ifdef FDT
/*