[U-Boot] [PATCH v3 10/18] malta: display "U-boot" on the LCD screen
Marek Vasut
marex at denx.de
Sun Nov 10 21:08:17 CET 2013
Dear Paul Burton,
> Displaying a message on the LCD screen is a simple yet effective way to
> show the user that the board has booted successfully.
>
> Signed-off-by: Paul Burton <paul.burton at imgtec.com>
> ---
> Changes in v3:
> - rebase atop master
>
> Changes in v2:
> - rebased after malta moved to board/imgtec/malta
> ---
> arch/mips/include/asm/malta.h | 10 ++++++++++
> board/imgtec/malta/malta.c | 19 +++++++++++++++++++
> 2 files changed, 29 insertions(+)
>
> diff --git a/arch/mips/include/asm/malta.h b/arch/mips/include/asm/malta.h
> index 0b50a66..d8ec57c 100644
> --- a/arch/mips/include/asm/malta.h
> +++ b/arch/mips/include/asm/malta.h
> @@ -32,6 +32,16 @@
> #define MALTA_MSC01_PCIIO_MAP 0x00000000
> #define MALTA_MSC01_UART0_BASE (MALTA_MSC01_PCIIO_BASE + 0x3f8)
>
> +#define MALTA_ASCIIWORD 0x1f000410
> +#define MALTA_ASCIIPOS0 0x1f000418
> +#define MALTA_ASCIIPOS1 0x1f000420
> +#define MALTA_ASCIIPOS2 0x1f000428
> +#define MALTA_ASCIIPOS3 0x1f000430
> +#define MALTA_ASCIIPOS4 0x1f000438
> +#define MALTA_ASCIIPOS5 0x1f000440
> +#define MALTA_ASCIIPOS6 0x1f000448
> +#define MALTA_ASCIIPOS7 0x1f000450
> +
> #define MALTA_RESET_BASE 0x1f000500
> #define GORESET 0x42
>
> diff --git a/board/imgtec/malta/malta.c b/board/imgtec/malta/malta.c
> index 2af0067..119546a 100644
> --- a/board/imgtec/malta/malta.c
> +++ b/board/imgtec/malta/malta.c
> @@ -29,6 +29,24 @@ enum sys_con {
> SYSCON_MSC01,
> };
>
> +static void malta_lcd_puts(const char *str)
> +{
> + int i;
> + void *reg = (void *)CKSEG1ADDR(MALTA_ASCIIPOS0);
> +
> + /* print up to 8 characters of the string */
> + for (i = 0; i < min(strlen(str), 8); i++) {
> + __raw_writel(str[i], reg);
> + reg += MALTA_ASCIIPOS1 - MALTA_ASCIIPOS0;
> + }
> +
> + /* fill the rest of the display with spaces */
> + for (; i < 8; i++) {
> + __raw_writel(' ', reg);
> + reg += MALTA_ASCIIPOS1 - MALTA_ASCIIPOS0;
> + }
> +}
> +
> static enum core_card malta_core_card(void)
> {
> u32 corid, rev;
> @@ -71,6 +89,7 @@ int checkboard(void)
> {
> enum core_card core;
>
> + malta_lcd_puts("U-boot");
> puts("Board: MIPS Malta");
>
> core = malta_core_card();
Can this not be implemented as a regular framebuffer console maybe?
Best regards,
Marek Vasut
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