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lmb: nds32: 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.

Reviewed-by: Rick Chen <rick@andestech.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Rick Chen <rick@andestech.com>
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 22:47:14 +02:00 committed by Tom Rini
parent a02c18f31f
commit 6a0890a61e
1 changed files with 13 additions and 0 deletions
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13
arch/nds32/lib/bootm.c
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@ -245,3 +245,16 @@ static void setup_end_tag(struct bd_info *bd)
} }
#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
static ulong get_sp(void)
{
ulong ret;
asm("move %0, $sp" : "=r"(ret) : );
return ret;
}
void arch_lmb_reserve(struct lmb *lmb)
{
arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 4096);
}