Merge branch 'master' of git://git.denx.de/u-boot-cfi-flash

[u-boot] / board / ads5121 / ads5121.c

diff --git a/board/ads5121/ads5121.c b/board/ads5121/ads5121.c
index ae1ccd94434d5b0eca06a3c3985c4b31000c37fe..6c40e94416dc2366bdd3e694e862d4db629854ea 100644 (file)
--- a/board/ads5121/ads5121.c
+++ b/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) */