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lmb: nios2: 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: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Thomas Chou <thomas@wytron.com.tw>
Cc: Tom Rini <trini@konsulko.com>
This commit is contained in:
Marek Vasut 2021-09-10 22:47:13 +02:00 committed by Tom Rini
parent c16de86ec0
commit a02c18f31f
1 changed files with 16 additions and 0 deletions
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16
arch/nios2/lib/bootm.c
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@ -10,6 +10,9 @@
#include <image.h>
#include <irq_func.h>
#include <log.h>
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
#define NIOS_MAGIC 0x534f494e /* enable command line and initrd passing */
@ -60,3 +63,16 @@ int do_bootm_linux(int flag, int argc, char *const argv[],
return 1;
}
static ulong get_sp(void)
{
ulong ret;
asm("mov %0, sp" : "=r"(ret) : );
return ret;
}
void arch_lmb_reserve(struct lmb *lmb)
{
arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 4096);
}