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cmd: pxe: Display splashscreen from extlinux.conf input

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The objective is to provide a simple way to retrieve a BMP file,
and display it as splashscreen, from extlinux.conf file input.

For this, we take example on https://www.syslinux.org/wiki/
index.php?title=Menu#The_advanced_menu_system
and more particularly on MENU BACKGROUND chapter.
For this, add "menu background" support in pxe command.

As example, extlinux.conf content will look like:

# Generic Distro Configuration file generated by OpenEmbedded
menu title Select the boot mode
TIMEOUT 20
menu background ../splash.bmp
DEFAULT stm32mp157c-ev1-sdcard
LABEL stm32mp157c-ev1-sdcard
	KERNEL /uImage
	FDT /stm32mp157c-ev1.dtb
	APPEND root=/dev/mmcblk0p6 rootwait rw earlyprintk console=ttySTM0,115200

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrice Chotard 2019-04-11 11:13:13 +02:00 committed by Tom Rini
parent 9bdfe290e9
commit ee8a4a3f9d
1 changed files with 24 additions and 0 deletions
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24
cmd/pxe.c
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@ -8,11 +8,13 @@
#include <command.h>
#include <malloc.h>
#include <mapmem.h>
#include <lcd.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <errno.h>
#include <linux/list.h>
#include <fs.h>
#include <splash.h>
#include <asm/io.h>
#include "menu.h"
@ -488,6 +490,7 @@ struct pxe_label {
*
* title - the name of the menu as given by a 'menu title' line.
* default_label - the name of the default label, if any.
* bmp - the bmp file name which is displayed in background
* timeout - time in tenths of a second to wait for a user key-press before
* booting the default label.
* prompt - if 0, don't prompt for a choice unless the timeout period is
@ -498,6 +501,7 @@ struct pxe_label {
struct pxe_menu {
char *title;
char *default_label;
char *bmp;
int timeout;
int prompt;
struct list_head labels;
@ -850,6 +854,7 @@ enum token_type {
T_FDTDIR,
T_ONTIMEOUT,
T_IPAPPEND,
T_BACKGROUND,
T_INVALID
};
@ -883,6 +888,7 @@ static const struct token keywords[] = {
{"fdtdir", T_FDTDIR},
{"ontimeout", T_ONTIMEOUT,},
{"ipappend", T_IPAPPEND,},
{"background", T_BACKGROUND,},
{NULL, T_INVALID}
};
@ -1160,6 +1166,10 @@ static int parse_menu(cmd_tbl_t *cmdtp, char **c, struct pxe_menu *cfg,
nest_level + 1);
break;
case T_BACKGROUND:
err = parse_sliteral(c, &cfg->bmp);
break;
default:
printf("Ignoring malformed menu command: %.*s\n",
(int)(*c - s), s);
@ -1574,6 +1584,20 @@ static void handle_pxe_menu(cmd_tbl_t *cmdtp, struct pxe_menu *cfg)
struct menu *m;
int err;
#ifdef CONFIG_CMD_BMP
/* display BMP if available */
if (cfg->bmp) {
if (get_relfile(cmdtp, cfg->bmp, load_addr)) {
run_command("cls", 0);
bmp_display(load_addr,
BMP_ALIGN_CENTER, BMP_ALIGN_CENTER);
} else {
printf("Skipping background bmp %s for failure\n",
cfg->bmp);
}
}
#endif
m = pxe_menu_to_menu(cfg);
if (!m)
return;