diff options
| author | Randy Dunlap <rdunlap@xenotime.net> | 2007-10-16 01:29:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:20 -0700 |
| commit | accaa24c492f1aa3b9c37226d868dc59c3007531 (patch) | |
| tree | 18778253e745b9b01a8913f2e2903b3f58226ebc | |
| parent | 840bc9b0937aebd6004debf457cfb53f1f122d3b (diff) | |
fbcon: logo: disable logo at boot
Add logo.nologo kernel boot option to disable the logo in order to provide
more screen space for kernel messages; especially useful when debugging and
screen space is more critical.
newport_con driver changes are untested.
[akpm@linux-foundation.org: cleanups, coding-style fixes]
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | Documentation/kernel-parameters.txt | 5 | ||||
| -rw-r--r-- | drivers/video/console/newport_con.c | 20 | ||||
| -rw-r--r-- | drivers/video/logo/logo.c | 7 |
3 files changed, 26 insertions, 6 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 760ed5776174..eb247997f679 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -911,6 +911,11 @@ and is between 256 and 4096 characters. It is defined in the file n must be a power of two. The default size is set in the kernel config file. + logo.nologo [FB] Disables display of the built-in Linux logo. + This may be used to provide more screen space for + kernel log messages and is useful when debugging + kernel boot problems. + lp=0 [LP] Specify parallel ports to use, e.g, lp=port[,port...] lp=none,parport0 (lp0 not configured, lp1 uses lp=reset first parallel port). 'lp=0' disables the diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c index dda0586ab3f3..f57d7b2758b7 100644 --- a/drivers/video/console/newport_con.c +++ b/drivers/video/console/newport_con.c @@ -98,14 +98,19 @@ static inline void newport_init_cmap(void) } } -static void newport_show_logo(void) +static struct linux_logo *newport_show_logo(void) { #ifdef CONFIG_LOGO_SGI_CLUT224 const struct linux_logo *logo = fb_find_logo(8); - const unsigned char *clut = logo->clut; - const unsigned char *data = logo->data; + const unsigned char *clut; + const unsigned char *data; unsigned long i; + if (!logo) + return NULL; + *clut = logo->clut; + *data = logo->data; + for (i = 0; i < logo->clutsize; i++) { newport_bfwait(npregs); newport_cmap_setaddr(npregs, i + 0x20); @@ -123,6 +128,8 @@ static void newport_show_logo(void) for (i = 0; i < logo->width*logo->height; i++) npregs->go.hostrw0 = *data++ << 24; + + return logo; #endif /* CONFIG_LOGO_SGI_CLUT224 */ } @@ -465,9 +472,10 @@ static int newport_switch(struct vc_data *vc) npregs->cset.topscan = 0x3ff; if (!logo_drawn) { - newport_show_logo(); - logo_drawn = 1; - logo_active = 1; + if (newport_show_logo()) { + logo_drawn = 1; + logo_active = 1; + } } return 1; diff --git a/drivers/video/logo/logo.c b/drivers/video/logo/logo.c index 2b0f799aa8da..a9283bae7790 100644 --- a/drivers/video/logo/logo.c +++ b/drivers/video/logo/logo.c @@ -34,6 +34,10 @@ extern const struct linux_logo logo_superh_vga16; extern const struct linux_logo logo_superh_clut224; extern const struct linux_logo logo_m32r_clut224; +static int nologo; +module_param(nologo, bool, 0); +MODULE_PARM_DESC(nologo, "Disables startup logo"); + /* logo's are marked __initdata. Use __init_refok to tell * modpost that it is intended that this function uses data * marked __initdata. @@ -42,6 +46,9 @@ const struct linux_logo * __init_refok fb_find_logo(int depth) { const struct linux_logo *logo = NULL; + if (nologo) + return NULL; + if (depth >= 1) { #ifdef CONFIG_LOGO_LINUX_MONO /* Generic Linux logo */ |