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lmb: xtensa: Add arch_lmb_reserve()

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Add arch_lmb_reserve() implemented using arch_lmb_reserve_generic().
It is rather likely this architecture also needs to cover U-Boot with
LMB before booting Linux.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
This commit is contained in:
Marek Vasut 2021-09-10 22:47:17 +02:00 committed by Tom Rini
parent 1e0e557774
commit 7996b7e9f5
1 changed files with 12 additions and 0 deletions
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12
arch/xtensa/lib/bootm.c
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@ -197,3 +197,15 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
return 1;
}
static ulong get_sp(void)
{
ulong ret;
asm("mov %0, a1" : "=r"(ret) : );
return ret;
}
void arch_lmb_reserve(struct lmb *lmb)
{
arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 4096);
}