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| author | Marek Vasut <marek.vasut@gmail.com> | 2021-09-10 22:47:18 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-09-23 14:15:32 -0400 |
| commit | a69753f31d5863c692522f0b92db6e9cad06d553 (patch) | |
| tree | a0bdd68216d13d93aa02dd47851f69a0f545ffab | |
| parent | 7996b7e9f5826d172b820cea0d072e68cfe485ba (diff) | |
lmb: x86: Add arch_lmb_reserve()
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 Glass <sjg@chromium.org>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
| -rw-r--r-- | arch/x86/lib/bootm.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c index 733dd71257..667e5e689e 100644 --- a/arch/x86/lib/bootm.c +++ b/arch/x86/lib/bootm.c @@ -223,3 +223,21 @@ int do_bootm_linux(int flag, int argc, char *const argv[], return boot_jump_linux(images); } + +static ulong get_sp(void) +{ + ulong ret; + +#if CONFIG_IS_ENABLED(X86_64) + ret = gd->start_addr_sp; +#else + asm("mov %%esp, %0" : "=r"(ret) : ); +#endif + + return ret; +} + +void arch_lmb_reserve(struct lmb *lmb) +{ + arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 4096); +} |