diff options
Diffstat (limited to 'board/altera/common')
| -rw-r--r-- | board/altera/common/cfide.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/board/altera/common/cfide.c b/board/altera/common/cfide.c new file mode 100644 index 0000000..40d6a12 --- /dev/null +++ b/board/altera/common/cfide.c @@ -0,0 +1,33 @@ +/* + * Altera CF drvier + * + * (C) Copyright 2010, Thomas Chou <thomas@wytron.com.tw> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <common.h> +#include <asm/io.h> + +#if defined(CONFIG_IDE_RESET) && defined(CONFIG_SYS_CF_CTL_BASE) +/* ide_set_reset for Altera CF interface */ +#define ALTERA_CF_CTL_STATUS 0 +#define ALTERA_CF_IDE_CTL 4 +#define ALTERA_CF_CTL_STATUS_PRESENT_MSK (0x1) +#define ALTERA_CF_CTL_STATUS_POWER_MSK (0x2) +#define ALTERA_CF_CTL_STATUS_RESET_MSK (0x4) +#define ALTERA_CF_CTL_STATUS_IRQ_EN_MSK (0x8) +#define ALTERA_CF_IDE_CTL_IRQ_EN_MSK (0x1) + +void ide_set_reset(int idereset) +{ + int i; + writel(idereset ? ALTERA_CF_CTL_STATUS_RESET_MSK : + ALTERA_CF_CTL_STATUS_POWER_MSK, + CONFIG_SYS_CF_CTL_BASE + ALTERA_CF_CTL_STATUS); + /* wait 500 ms for power to stabilize */ + for (i = 0; i < 500; i++) + udelay(1000); +} +#endif |