ADS5121 Add PATA support

Original patch from Ralph Kondziella
plus clean up by Wolfgang Denk
plus changes by John Rigby
    use ips clock not lpc
    port forward to current u-boot release

Signed-off-by: Ralph Kondziella <rk@argos-messtechnik.de>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: John Rigby <jrigby@freescale.com>

board/ads5121/ads5121.c

@@ -31,6 +31,8 @@
 #include <i2c.h>
 #endif
 
+DECLARE_GLOBAL_DATA_PTR;
+
 /* Clocks in use */
 #define SCCR1_CLOCKS_EN	(CLOCK_SCCR1_CFG_EN |				\
 			 CLOCK_SCCR1_LPC_EN |				\
@@ -38,6 +40,7 @@
 			 CLOCK_SCCR1_PSCFIFO_EN |			\
 			 CLOCK_SCCR1_DDR_EN |				\
 			 CLOCK_SCCR1_FEC_EN |				\
+			 CLOCK_SCCR1_PATA_EN |				\
 			 CLOCK_SCCR1_PCI_EN |				\
 			 CLOCK_SCCR1_TPR_EN)
 
@@ -326,3 +329,104 @@ void ft_board_setup(void *blob, bd_t *bd)
 	fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
 }
 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
+
+#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET)
+
+void init_ide_reset (void)
+{
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+	debug ("init_ide_reset\n");
+
+	/*
+	 * Clear the reset bit to reset the interface
+	 * cf. RefMan MPC5121EE: 28.4.1 Resetting the ATA Bus
+	 */
+	immr->pata.pata_ata_control = 0;
+	udelay(100);
+	/* Assert the reset bit to enable the interface */
+	immr->pata.pata_ata_control = FSL_ATA_CTRL_ATA_RST_B;
+	udelay(100);
+
+}
+
+void ide_set_reset (int idereset)
+{
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+	debug ("ide_set_reset(%d)\n", idereset);
+
+	if (idereset) {
+		immr->pata.pata_ata_control = 0;
+		udelay(100);
+	} else {
+		immr->pata.pata_ata_control = FSL_ATA_CTRL_ATA_RST_B;
+		udelay(100);
+	}
+}
+
+#define CALC_TIMING(t) (t + period - 1) / period
+
+int ide_preinit (void)
+{
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+	long t;
+	const struct {
+		short t0;
+		short t1;
+		short t2_8;
+		short t2_16;
+		short t2i;
+		short t4;
+		short t9;
+		short tA;
+	} pio_specs = {
+		.t0    = 600,
+		.t1    =  70,
+		.t2_8  = 290,
+		.t2_16 = 165,
+		.t2i   =   0,
+		.t4    =  30,
+		.t9    =  20,
+		.tA    =  50,
+	};
+	union {
+		u32 config;
+		struct {
+			u8 field1;
+			u8 field2;
+			u8 field3;
+			u8 field4;
+		}bytes;
+	}cfg;
+
+	debug ("IDE preinit using PATA peripheral at IMMR-ADDR %08x\n",
+		(u32)&immr->pata);
+
+	/* Set the reset bit to 1 to enable the interface */
+	immr->pata.pata_ata_control = FSL_ATA_CTRL_ATA_RST_B;
+
+	/* Init timings : we use PIO mode 0 timings */
+	t = 1000000000 / gd->ips_clk;	/* period in ns */
+	cfg.bytes.field1 = 3;
+	cfg.bytes.field2 = 3;
+	cfg.bytes.field3 = (pio_specs.t1 + t) / t;
+	cfg.bytes.field4 = (pio_specs.t2_8 + t) / t;
+
+	immr->pata.pata_time1 = cfg.config;
+
+	cfg.bytes.field1 = (pio_specs.t2_8 + t) / t;
+	cfg.bytes.field2 = (pio_specs.tA + t) / t + 2;
+	cfg.bytes.field3 = 1;
+	cfg.bytes.field4 = (pio_specs.t4 + t) / t;
+
+	immr->pata.pata_time2 = cfg.config;
+
+	cfg.config = immr->pata.pata_time3;
+	cfg.bytes.field1 = (pio_specs.t9 + t) / t;
+
+	immr->pata.pata_time3 = cfg.config;
+	debug ("PATA preinit complete.\n");
+
+	return 0;
+}
+
+#endif /* defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) */

common/cmd_ide.c

@@ -45,6 +45,10 @@
 #include <mpc5xxx.h>
 #endif
 
+#ifdef CONFIG_MPC512X
+#include <mpc512x.h>
+#endif
+
 #include <ide.h>
 #include <ata.h>
 

include/asm-ppc/immap_512x.h

@@ -469,7 +469,34 @@ typedef struct lpc512x {
  * PATA
  */
 typedef struct pata512x {
-	u8 fixme[0x100];
+	/* LOCAL Registers */
+	u32 pata_time1;		/* Time register 1: PIO and tx timing parameter */
+	u32 pata_time2;		/* Time register 2: PIO timing parameter */
+	u32 pata_time3;		/* Time register 3: PIO and MDMA timing parameter */
+	u32 pata_time4;		/* Time register 4: MDMA and UDMA timing parameter */
+	u32 pata_time5;		/* Time register 5: UDMA timing parameter */
+	u32 pata_time6;		/* Time register 6: UDMA timing parameter */
+	u32 pata_fifo_data32;   /* 32bit wide dataport to/from FIFO */
+	u32 pata_fifo_data16;   /* 16bit wide dataport to/from FIFO */
+	u32 pata_fifo_fill;	/* FIFO filling in halfwords (READONLY)*/
+	u32 pata_ata_control;   /* ATA Interface control register */
+	u32 pata_irq_pending;   /* Interrupt pending register (READONLY) */
+	u32 pata_irq_enable;	/* Interrupt enable register */
+	u32 pata_irq_clear;	/* Interrupt clear register (WRITEONLY)*/
+	u32 pata_fifo_alarm;	/* fifo alarm threshold */
+	u32 res1[0x1A];
+	/* DRIVE Registers */
+	u32 pata_drive_data;	/* drive data register*/
+	u32 pata_drive_features;/* drive features register */
+	u32 pata_drive_sectcnt; /* drive sector count register */
+	u32 pata_drive_sectnum; /* drive sector number register */
+	u32 pata_drive_cyllow;  /* drive cylinder low register */
+	u32 pata_drive_cylhigh; /* drive cylinder high register */
+	u32 pata_drive_dev_head;/* drive device head register */
+	u32 pata_drive_command; /* write = drive command, read = drive status reg */
+	u32 res2[0x06];
+	u32 pata_drive_alt_stat;/* write = drive control, read = drive alt status reg */
+	u32 res3[0x09];
 } pata512x_t;
 
 /*

include/configs/ads5121.h

@@ -355,11 +355,19 @@
 #define CONFIG_CMD_EEPROM
 #define CONFIG_CMD_DATE
 #undef CONFIG_CMD_FUSE
+#define CONFIG_CMD_IDE
+#define CONFIG_CMD_EXT2
 
 #if defined(CONFIG_PCI)
 #define CONFIG_CMD_PCI
 #endif
 
+#if defined(CONFIG_CMD_IDE)
+#define CONFIG_DOS_PARTITION
+#define CONFIG_MAC_PARTITION
+#define CONFIG_ISO_PARTITION
+#endif /* defined(CONFIG_CMD_IDE) */
+
 /*
  * Watchdog timeout = CONFIG_SYS_WATCHDOG_VALUE * 65536 / IPS clock.
  * For example, when IPS is set to 66MHz and CONFIG_SYS_WATCHDOG_VALUE is set
@@ -496,4 +504,48 @@
 #define OF_TBCLK		(bd->bi_busfreq / 4)
 #define OF_STDOUT_PATH		"/soc@80000000/serial@11300"
 
+/*-----------------------------------------------------------------------
+ * IDE/ATA stuff
+ *-----------------------------------------------------------------------
+ */
+
+#undef  CONFIG_IDE_8xx_PCCARD		/* Use IDE with PC Card	Adapter	*/
+#undef	CONFIG_IDE_8xx_DIRECT		/* Direct IDE    not supported	*/
+#undef	CONFIG_IDE_LED			/* LED   for IDE not supported	*/
+
+#define CONFIG_IDE_RESET		/* reset for IDE supported	*/
+#define CONFIG_IDE_PREINIT
+
+#define CONFIG_SYS_IDE_MAXBUS		1	/* max. 1 IDE bus		*/
+#define CONFIG_SYS_IDE_MAXDEVICE	2	/* max. 1 drive per IDE bus	*/
+
+#define CONFIG_SYS_ATA_IDE0_OFFSET	0x0000
+#define CONFIG_SYS_ATA_BASE_ADDR	MPC512X_PATA
+
+/* Offset for data I/O			RefMan MPC5121EE Table 28-10	*/
+#define CONFIG_SYS_ATA_DATA_OFFSET	(0x00A0)
+
+/* Offset for normal register accesses	*/
+#define CONFIG_SYS_ATA_REG_OFFSET	(CONFIG_SYS_ATA_DATA_OFFSET)
+
+/* Offset for alternate registers	RefMan MPC5121EE Table 28-23	*/
+#define CONFIG_SYS_ATA_ALT_OFFSET	(0x00D8)
+
+/* Interval between registers	*/
+#define CONFIG_SYS_ATA_STRIDE		4
+
+#define ATA_BASE_ADDR		MPC512X_PATA
+
+/*
+ * Control register bit definitions
+ */
+#define FSL_ATA_CTRL_FIFO_RST_B		0x80000000
+#define FSL_ATA_CTRL_ATA_RST_B		0x40000000
+#define FSL_ATA_CTRL_FIFO_TX_EN		0x20000000
+#define FSL_ATA_CTRL_FIFO_RCV_EN	0x10000000
+#define FSL_ATA_CTRL_DMA_PENDING	0x08000000
+#define FSL_ATA_CTRL_DMA_ULTRA		0x04000000
+#define FSL_ATA_CTRL_DMA_WRITE		0x02000000
+#define FSL_ATA_CTRL_IORDY_EN		0x01000000
+
 #endif	/* __CONFIG_H */

include/mpc512x.h

@@ -573,6 +573,7 @@ void iopin_initialize(iopin_t *,int);
 
  /* Register Offset Base */
 #define MPC512X_FEC		(CONFIG_SYS_IMMR + 0x02800)
+#define MPC512X_PATA		(CONFIG_SYS_IMMR + 0x10200)
 
 /* IIM control */
 #define IIM_SET_UA(bk, f)	((bk << 3) | (f >> 5))