ata: add the libata support
add simple libata support in u-boot
Signed-off-by: Dave Liu <daveliu@freescale.com>
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index e069969..d63ca2d 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -27,6 +27,7 @@
COBJS-y += ahci.o
COBJS-y += ata_piix.o
+COBJS-$(CONFIG_LIBATA) += libata.o
COBJS-y += sil680.o
COBJS-y += sym53c8xx.o
COBJS-y += systemace.o
diff --git a/drivers/block/libata.c b/drivers/block/libata.c
new file mode 100644
index 0000000..a0cf90d
--- /dev/null
+++ b/drivers/block/libata.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2008 Freescale Semiconductor, Inc.
+ * Dave Liu <daveliu@freescale.com>
+ * port from the libata of linux kernel
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <libata.h>
+
+u64 ata_id_n_sectors(u16 *id)
+{
+ if (ata_id_has_lba(id)) {
+ if (ata_id_has_lba48(id))
+ return ata_id_u64(id, ATA_ID_LBA48_SECTORS);
+ else
+ return ata_id_u32(id, ATA_ID_LBA_SECTORS);
+ } else {
+ return 0;
+ }
+}
+
+u32 ata_dev_classify(u32 sig)
+{
+ u8 lbam, lbah;
+
+ lbam = (sig >> 16) & 0xff;
+ lbah = (sig >> 24) & 0xff;
+
+ if (((lbam == 0) && (lbah == 0)) ||
+ ((lbam == 0x3c) && (lbah == 0xc3)))
+ return ATA_DEV_ATA;
+
+ if ((lbam == 0x14) && (lbah == 0xeb))
+ return ATA_DEV_ATAPI;
+
+ if ((lbam == 0x69) && (lbah == 0x96))
+ return ATA_DEV_PMP;
+
+ return ATA_DEV_UNKNOWN;
+}
+
+static void ata_id_string(const u16 *id, unsigned char *s,
+ unsigned int ofs, unsigned int len)
+{
+ unsigned int c;
+
+ while (len > 0) {
+ c = id[ofs] >> 8;
+ *s = c;
+ s++;
+
+ c = id[ofs] & 0xff;
+ *s = c;
+ s++;
+
+ ofs++;
+ len -= 2;
+ }
+}
+
+void ata_id_c_string(const u16 *id, unsigned char *s,
+ unsigned int ofs, unsigned int len)
+{
+ unsigned char *p;
+
+ ata_id_string(id, s, ofs, len - 1);
+
+ p = s + strnlen((char *)s, len - 1);
+ while (p > s && p[-1] == ' ')
+ p--;
+ *p = '\0';
+}
+
+void ata_dump_id(u16 *id)
+{
+ unsigned char serial[ATA_ID_SERNO_LEN + 1];
+ unsigned char firmware[ATA_ID_FW_REV_LEN + 1];
+ unsigned char product[ATA_ID_PROD_LEN + 1];
+ u64 n_sectors;
+
+ /* Serial number */
+ ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
+ printf("S/N: %s\n\r", serial);
+
+ /* Firmware version */
+ ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
+ printf("Firmware version: %s\n\r", firmware);
+
+ /* Product model */
+ ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
+ printf("Product model number: %s\n\r", product);
+
+ /* Total sectors of device */
+ n_sectors = ata_id_n_sectors(id);
+ printf("Capablity: %d sectors\n\r", n_sectors);
+
+ printf("id[49]: capabilities ==0x%04x\n"
+ "id[53]: field valid ==0x%04x\n"
+ "id[63]: mwdma ==0x%04x\n"
+ "id[64]: pio ==0x%04x\n"
+ "id[75]: queue depth ==0x%04x\n",
+ id[49],
+ id[53],
+ id[63],
+ id[64],
+ id[75]);
+
+ printf("id[76]: sata capablity ==0x%04x\n"
+ "id[78]: sata features supported ==0x%04x\n"
+ "id[79]: sata features enable ==0x%04x\n",
+ id[76],
+ id[78],
+ id[79]);
+
+ printf("id[80]: major version ==0x%04x\n"
+ "id[81]: minor version ==0x%04x\n"
+ "id[82]: command set supported 1 ==0x%04x\n"
+ "id[83]: command set supported 2 ==0x%04x\n"
+ "id[84]: command set extension ==0x%04x\n",
+ id[80],
+ id[81],
+ id[82],
+ id[83],
+ id[84]);
+ printf("id[85]: command set enable 1 ==0x%04x\n"
+ "id[86]: command set enable 2 ==0x%04x\n"
+ "id[87]: command set default ==0x%04x\n"
+ "id[88]: udma ==0x%04x\n"
+ "id[93]: hardware reset result ==0x%04x\n",
+ id[85],
+ id[86],
+ id[87],
+ id[88],
+ id[93]);
+}
+
+void ata_swap_buf_le16(u16 *buf, unsigned int buf_words)
+{
+ unsigned int i;
+
+ for (i = 0; i < buf_words; i++)
+ buf[i] = le16_to_cpu(buf[i]);
+}