diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/emulation/qemu-power9/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-power9/ramstage.c | 21 |
2 files changed, 23 insertions, 0 deletions
diff --git a/src/mainboard/emulation/qemu-power9/Makefile.inc b/src/mainboard/emulation/qemu-power9/Makefile.inc index bd905a3029..ace00a75b7 100644 --- a/src/mainboard/emulation/qemu-power9/Makefile.inc +++ b/src/mainboard/emulation/qemu-power9/Makefile.inc @@ -2,3 +2,5 @@ romstage-y += cbmem.c romstage-y += romstage.c + +ramstage-y += ramstage.c diff --git a/src/mainboard/emulation/qemu-power9/ramstage.c b/src/mainboard/emulation/qemu-power9/ramstage.c new file mode 100644 index 0000000000..c92587b696 --- /dev/null +++ b/src/mainboard/emulation/qemu-power9/ramstage.c @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <cpu/power/spr.h> +#include <program_loading.h> + +/* + * Payload's entry point is an offset to the real entry point, not to OPD + * (Official Procedure Descriptor) for entry point. + * + * Also pass FDT address to payload stored in SPR_HSPRG0 by bootblock. + */ +void platform_prog_run(struct prog *prog) +{ + asm volatile( + "mfspr %%r27, %0\n" /* pass pointer to FDT */ + "mtctr %2\n" + "mr 3, %1\n" + "bctr\n" + :: "i"(SPR_HSPRG0), "r"(prog_entry_arg(prog)), "r"(prog_entry(prog)) + : "memory"); +} |