On 10/11/13 20:08, Marek Vasut wrote:
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.bur...@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
We're talking about an 8 character segmented LCD display here - it's not
something you can draw (non-ASCII) graphics on, nor something you want
to be interacting with even if you hooked up some input.
Thanks,
Paul
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