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| author | Alexey Galakhov <agalakhov@gmail.com> | 2013-07-09 21:23:16 +0600 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-07-09 19:49:50 +0200 |
| commit | 6624fd535627cdffdbb01f18161cb3d81a6081a6 (patch) | |
| tree | a56ca0d2e1c25fc3cc65a22905dea847ef59b199 /arch/arm/boards/friendlyarm-tiny210 | |
| parent | a1c79b1bd1a7d52f2b9b1697923fdf7c8583845a (diff) | |
| download | barebox-6624fd535627cdffdbb01f18161cb3d81a6081a6.tar.gz barebox-6624fd535627cdffdbb01f18161cb3d81a6081a6.tar.xz | |
friendlyarm-tiny210: use LEDs for boot errors
Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/boards/friendlyarm-tiny210')
| -rw-r--r-- | arch/arm/boards/friendlyarm-tiny210/lowlevel.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/arm/boards/friendlyarm-tiny210/lowlevel.c b/arch/arm/boards/friendlyarm-tiny210/lowlevel.c index 0c7fbf3deb..96760945bc 100644 --- a/arch/arm/boards/friendlyarm-tiny210/lowlevel.c +++ b/arch/arm/boards/friendlyarm-tiny210/lowlevel.c @@ -33,6 +33,22 @@ #define IRAM_CODE_BASE 0xD0020010 +/* Tiny210 has 4 leds numbered from 0 to 3 at GPJ2 */ +static inline void __bare_init debug_led(int led, bool state) +{ + uint32_t r; + /* GPJ2CON: mode 0001=output */ + r = readl(0xE0200280); + r &= ~(0xF << (4 * led)); + r |= (0x1 << (4 * led)); + writel(r, 0xE0200280); + /* GPJ2DAT: active low */ + r = readl(0xE0200284); + r &= ~(1 << led); + r |= (state ? 0 : 1) << led; + writel(r, 0xE0200284); +} + /* * iROM boot from MMC * TODO: replace this by native boot @@ -76,18 +92,28 @@ void __bare_init barebox_arm_reset_vector(void) s5p_init_pll(); #endif + debug_led(0, 1); + if (get_pc() < IRAM_CODE_BASE) /* Are we running from iRAM? */ /* No, we don't. */ goto boot; s5p_init_dram_bank_ddr2(S5P_DMC0_BASE, 0x20E00323, 0, 0); + debug_led(1, 1); + if (! load_stage2((void*)(ld_var(_text) - 16), - ld_var(_barebox_image_size) + 16)) + ld_var(_barebox_image_size) + 16)) { + debug_led(3, 1); while (1) { } /* hang */ + } + + debug_led(2, 1); jump_sdram(IRAM_CODE_BASE - ld_var(_text)); + debug_led(1, 0); + boot: barebox_arm_entry(S3C_SDRAM_BASE, SZ_256M, 0); } |