diff options
| author | Marek Vasut | 2021-09-10 22:47:13 +0200 |
|---|---|---|
| committer | Tom Rini | 2021-09-23 14:15:32 -0400 |
| commit | a02c18f31f8b99418be8b17135c7a10910dc10e8 (patch) | |
| tree | 8ece1adf871d2079d52d290136065190926982cd /arch/nios2/lib | |
| parent | c16de86ec0ac7dc208cd397eeb3f6bdf4406aad7 (diff) | |
lmb: nios2: 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 Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Thomas Chou <thomas@wytron.com.tw>
Cc: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'arch/nios2/lib')
| -rw-r--r-- | arch/nios2/lib/bootm.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/nios2/lib/bootm.c b/arch/nios2/lib/bootm.c index 50374671515..3cb59bd9777 100644 --- a/arch/nios2/lib/bootm.c +++ b/arch/nios2/lib/bootm.c @@ -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); +} |