[Skiboot] [PATCH] core/console.c: Make skiboot fun again
Guilherme G. Piccoli
gpiccoli at linux.vnet.ibm.com
Tue Dec 12 07:20:37 AEDT 2017
On 12/08/2017 12:28 AM, Alistair Popple wrote:
> ,_ _,
> |\\.-"""-.//|
> \` `/
> / _ _ \
> | a _ a |
> '.= Y =.'
> >._ ^ _.<
> / ````` \
> ) (
> ,( ),
> / ) / \ ( \
> ) ( ) ( ) (
> ( ) ( ) ( )
> )_( ) ( )_(-.._
> ( )_ (._.) _( )_, `\
> ``( ) ( )`` .' .'
> jgs ``` ``` ( (`
> '-'
>
> Skiboot output is pretty dull to look at. Sometimes surprises are nice.
> Especially when they are comforting cats. Even more so when they are
> rainbow coloured cats. Lol.
>
> Signed-off-by: Alistair Popple <alistair at popple.id.au>
Admired-by: Guilherme G. Piccoli <gpiccoli at linux.vnet.ibm.com>
> ---
> core/console.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++
> core/init.c | 4 +++
> include/skiboot.h | 3 +++
> platforms/astbmc/common.c | 5 ++++
> 4 files changed, 74 insertions(+)
>
> diff --git a/core/console.c b/core/console.c
> index b9129c9f..9c344e9e 100644
> --- a/core/console.c
> +++ b/core/console.c
> @@ -235,6 +235,39 @@ static void write_char(char c)
> inmem_write(c);
> }
>
> +int sine_table[] = {
> + 0x80,0x83,0x86,0x8a,0x8d,0x90,0x93,0x97,
> + 0x9a,0x9d,0xa0,0xa4,0xa7,0xaa,0xad,0xb0,
> + 0xb3,0xb6,0xb9,0xbc,0xbf,0xc2,0xc5,0xc8,
> + 0xca,0xcd,0xd0,0xd2,0xd5,0xd7,0xda,0xdc,
> + 0xde,0xe0,0xe3,0xe5,0xe7,0xe9,0xea,0xec,
> + 0xee,0xf0,0xf1,0xf3,0xf4,0xf5,0xf7,0xf8,
> + 0xf9,0xfa,0xfb,0xfb,0xfc,0xfd,0xfd,0xfe,
> + 0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
> + 0xfe,0xfe,0xfd,0xfd,0xfc,0xfb,0xfb,0xfa,
> + 0xf9,0xf8,0xf7,0xf5,0xf4,0xf3,0xf1,0xf0,
> + 0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe0,
> + 0xde,0xdc,0xda,0xd7,0xd5,0xd2,0xd0,0xcd,
> + 0xca,0xc8,0xc5,0xc2,0xbf,0xbc,0xb9,0xb6,
> + 0xb3,0xb0,0xad,0xaa,0xa7,0xa4,0xa0,0x9d,
> + 0x9a,0x97,0x93,0x90,0x8d,0x8a,0x86,0x83,
> + 0x80,0x7c,0x79,0x75,0x72,0x6f,0x6c,0x68,
> + 0x65,0x62,0x5f,0x5b,0x58,0x55,0x52,0x4f,
> + 0x4c,0x49,0x46,0x43,0x40,0x3d,0x3a,0x37,
> + 0x35,0x32,0x2f,0x2d,0x2a,0x28,0x25,0x23,
> + 0x21,0x1f,0x1c,0x1a,0x18,0x16,0x15,0x13,
> + 0x11,0xf,0xe,0xc,0xb,0xa,0x8,0x7,
> + 0x6,0x5,0x4,0x4,0x3,0x2,0x2,0x1,
> + 0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
> + 0x1,0x1,0x2,0x2,0x3,0x4,0x4,0x5,
> + 0x6,0x7,0x8,0xa,0xb,0xc,0xe,0xf,
> + 0x11,0x13,0x15,0x16,0x18,0x1a,0x1c,0x1f,
> + 0x21,0x23,0x25,0x28,0x2a,0x2d,0x2f,0x32,
> + 0x35,0x37,0x3a,0x3d,0x40,0x43,0x46,0x49,
> + 0x4c,0x4f,0x52,0x55,0x58,0x5b,0x5f,0x62,
> + 0x65,0x68,0x6c,0x6f,0x72,0x75,0x79,0x7c };
> +
> +int lolcat = 0;
> ssize_t console_write(bool flush_to_drivers, const void *buf, size_t count)
> {
> /* We use recursive locking here as we can get called
> @@ -242,12 +275,41 @@ ssize_t console_write(bool flush_to_drivers, const void *buf, size_t count)
> */
> bool need_unlock = lock_recursive(&con_lock);
> const char *cbuf = buf;
> + char colour[30];
> + const char *colour_end = "\x1b[0m";
> + const char *cc;
> + int red, green, blue;
> + static int char_count = 0;
>
> while(count--) {
> char c = *(cbuf++);
> if (c == '\n')
> write_char('\r');
> +
> + if (lolcat) {
> + red = sine_table[char_count];
> + green = sine_table[(char_count + ARRAY_SIZE(sine_table)/3) % ARRAY_SIZE(sine_table)];
> + blue = sine_table[(char_count + (2*ARRAY_SIZE(sine_table))/3) % ARRAY_SIZE(sine_table)];
> +
> + snprintf(colour, ARRAY_SIZE(colour), "\x1b[38;2;%03d;%03d;%03dm", red, green, blue);
> + cc = colour;
> + while (*cc) {
> + write_char(*cc);
> + cc++;
> + }
> + }
> +
> write_char(c);
> +
> + if (lolcat) {
> + cc = colour_end;
> + while (*cc) {
> + write_char(*cc);
> + cc++;
> + char_count++;
> + char_count %= ARRAY_SIZE(sine_table);
> + }
> + }
> }
>
> __flush_console(flush_to_drivers);
> diff --git a/core/init.c b/core/init.c
> index 2eeba759..17c31118 100644
> --- a/core/init.c
> +++ b/core/init.c
> @@ -1002,6 +1002,10 @@ void __noreturn __nomcount main_cpu_entry(const void *fdt)
> /* Read in NVRAM and set it up */
> nvram_init();
>
> + /* Feeling colourful? */
> + if (!lolcat)
> + lolcat = !!nvram_query("lolcat");
> +
> /* preload the IMC catalog dtb */
> imc_catalog_preload();
>
> diff --git a/include/skiboot.h b/include/skiboot.h
> index db913258..11914a67 100644
> --- a/include/skiboot.h
> +++ b/include/skiboot.h
> @@ -52,6 +52,9 @@ extern struct mem_region *mem_region_next(struct mem_region *region);
> /* Readonly section start and end. */
> extern char __rodata_start[], __rodata_end[];
>
> +/* Enable lolcat mode */
> +extern int lolcat;
> +
> static inline bool is_rodata(const void *p)
> {
> return ((const char *)p >= __rodata_start && (const char *)p < __rodata_end);
> diff --git a/platforms/astbmc/common.c b/platforms/astbmc/common.c
> index 243ad946..9d6583b0 100644
> --- a/platforms/astbmc/common.c
> +++ b/platforms/astbmc/common.c
> @@ -26,6 +26,7 @@
> #include <bt.h>
> #include <errorlog.h>
> #include <lpc.h>
> +#include <rtc.h>
>
> #include "astbmc.h"
>
> @@ -120,6 +121,8 @@ static int astbmc_fru_init(void)
>
> void astbmc_init(void)
> {
> + struct tm tm;
> +
> /* Initialize PNOR/NVRAM */
> pnor_init();
>
> @@ -131,6 +134,8 @@ void astbmc_init(void)
> ipmi_wdt_init();
> ipmi_rtc_init();
> ipmi_opal_init();
> + while (rtc_cache_get(&tm)) opal_run_pollers();
> + lolcat = tm.tm_mon == 11 && tm.tm_mday == 7 && tm.tm_hour == 17 && tm.tm_min == 58;
> astbmc_fru_init();
> ipmi_sensor_init();
>
>
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