From 66cbcc72ae34711854ae7af8056bfb7169f874fd Mon Sep 17 00:00:00 2001 From: Rhys Kidd Date: Mon, 3 Jun 2019 00:13:14 +1000 Subject: [PATCH] drm/nouveau/bios/init: handle INIT_RESET_BEGUN devinit opcode Signal that the reset sequence has begun. This opcode signals that the software reset sequence has begun. Ordinarily, no actual operations are performed by the opcode. However it allows for possible software work arounds by devinit engines in software agents other than the VBIOS, such as the resman, FCODE, and EFI driver. Signed-off-by: Rhys Kidd Reviewed-by: Lyude Paul Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvkm/subdev/bios/init.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/init.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/init.c index 3f4f27d191ae..5e02832304e2 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/init.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/init.c @@ -1934,6 +1934,17 @@ init_ram_restrict_pll(struct nvbios_init *init) } } +/** + * INIT_RESET_BEGUN - opcode 0x8c + * + */ +static void +init_reset_begun(struct nvbios_init *init) +{ + trace("RESET_BEGUN\n"); + init->offset += 1; +} + /** * INIT_GPIO - opcode 0x8e * @@ -2260,7 +2271,7 @@ static struct nvbios_init_opcode { [0x79] = { init_pll }, [0x7a] = { init_zm_reg }, [0x87] = { init_ram_restrict_pll }, - [0x8c] = { init_reserved }, + [0x8c] = { init_reset_begun }, [0x8d] = { init_reserved }, [0x8e] = { init_gpio }, [0x8f] = { init_ram_restrict_zm_reg_group }, -- 2.30.2