diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2012-03-30 13:14:45 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2012-05-24 16:31:47 +1000 |
| commit | 78339fb75c21403677f61a02e1839b626a79325b (patch) | |
| tree | 597405086b8a29379f83ffe3713bfa6c55c493f1 /drivers/gpu | |
| parent | c6b7e89582bdb028e1b1763197ff24c77a43e1b0 (diff) | |
drm/nouveau/bios: allow loading alternate vbios image as firmware
Useful for debugging different VBIOS versions.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bios.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index 0be4a815e706..524f283263a9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -30,6 +30,7 @@ #include "nouveau_gpio.h" #include <linux/io-mapping.h> +#include <linux/firmware.h> /* these defines are made up */ #define NV_CIO_CRE_44_HEADA 0x0 @@ -249,8 +250,12 @@ bios_shadow(struct drm_device *dev) struct drm_nouveau_private *dev_priv = dev->dev_private; struct nvbios *bios = &dev_priv->vbios; struct methods *mthd, *best; + const struct firmware *fw; + char fname[32]; + int ret; if (nouveau_vbios) { + /* try to match one of the built-in methods */ mthd = shadow_methods; do { if (strcasecmp(nouveau_vbios, mthd->desc)) @@ -263,6 +268,22 @@ bios_shadow(struct drm_device *dev) return true; } while ((++mthd)->shadow); + /* attempt to load firmware image */ + snprintf(fname, sizeof(fname), "nouveau/%s", nouveau_vbios); + ret = request_firmware(&fw, fname, &dev->pdev->dev); + if (ret == 0) { + bios->length = fw->size; + bios->data = kmemdup(fw->data, fw->size, GFP_KERNEL); + release_firmware(fw); + + NV_INFO(dev, "VBIOS image: %s\n", nouveau_vbios); + if (score_vbios(bios, 1)) + return true; + + kfree(bios->data); + bios->data = NULL; + } + NV_ERROR(dev, "VBIOS source \'%s\' invalid\n", nouveau_vbios); } |