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RISC-V: Announce real and available memory at boot

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Most architectures print their total (real) and available memory during
boot. Properly initialize the realmem global and print these messages.
Also print the physical memory chunks (behind a bootverbose flag).

Reviewed by:	markj
Approved by:	markj (mentor)
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D20496
This commit is contained in:
Mitchell Horne 2019-06-09 15:48:36 +00:00
parent 93ca8057c5
commit bffa317ff2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=348838
2 changed files with 29 additions and 0 deletions
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28
sys/riscv/riscv/machdep.c
View File

@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
#include <sys/sysproto.h>
#include <sys/tslog.h>
#include <sys/ucontext.h>
#include <sys/vmmeter.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
@ -140,7 +141,34 @@ cpu_startup(void *dummy)
identify_cpu();
printf("real memory = %ju (%ju MB)\n", ptoa((uintmax_t)realmem),
ptoa((uintmax_t)realmem) / (1024 * 1024));
/*
* Display any holes after the first chunk of extended memory.
*/
if (bootverbose) {
int indx;
printf("Physical memory chunk(s):\n");
for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
vm_paddr_t size;
size = phys_avail[indx + 1] - phys_avail[indx];
printf(
"0x%016jx - 0x%016jx, %ju bytes (%ju pages)\n",
(uintmax_t)phys_avail[indx],
(uintmax_t)phys_avail[indx + 1] - 1,
(uintmax_t)size, (uintmax_t)size / PAGE_SIZE);
}
}
vm_ksubmap_init(&kmi);
printf("avail memory = %ju (%ju MB)\n",
ptoa((uintmax_t)vm_free_count()),
ptoa((uintmax_t)vm_free_count()) / (1024 * 1024));
bufinit();
vm_pager_bufferinit();
}

1
sys/riscv/riscv/pmap.c
View File

@ -640,6 +640,7 @@ pmap_bootstrap(vm_offset_t l1pt, vm_paddr_t kernstart, vm_size_t kernlen)
continue;
dump_avail[map_slot] = start;
dump_avail[map_slot + 1] = end;
realmem += atop((vm_offset_t)(end - start));
if (start >= kernstart && end <= pa)
continue;