ENGR00117616: PATA support in u-boot.

PATA support in u-boot.

Signed-off-by: Terry Lv <r65388@freescale.com>

1 files changed, 203 insertions, 0 deletions

diff --git a/common/cmd_pata.c b/common/cmd_pata.c
new file mode 100644
index 0000000..d326c1e
--- /dev/null
+++ b/common/cmd_pata.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2000-2005, DENX Software Engineering
+ *		Wolfgang Denk <wd@denx.de>
+ * Copyright (C) Procsys. All rights reserved.
+ *		Mushtaq Khan <mushtaq_k@procsys.com>
+ *			<mushtaqk_921@yahoo.co.in>
+ * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *		Terry Lv <r65388@freescale.com>
+ *
+ * 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 <common.h>
+#include <command.h>
+#include <part.h>
+#include <ata.h>
+#include <pata.h>
+
+int pata_curr_device = -1;
+block_dev_desc_t pata_dev_desc[CONFIG_SYS_ATA_MAX_DEVICE];
+
+int pata_initialize(void)
+{
+	int rc;
+	int i;
+
+	for (i = 0; i < CONFIG_SYS_ATA_MAX_DEVICE; i++) {
+		memset(&pata_dev_desc[i], 0, sizeof(struct block_dev_desc));
+		pata_dev_desc[i].if_type = IF_TYPE_ATAPI;
+		pata_dev_desc[i].dev = i;
+		pata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
+		pata_dev_desc[i].type = DEV_TYPE_HARDDISK;
+		pata_dev_desc[i].lba = 0;
+		pata_dev_desc[i].blksz = 512;
+		pata_dev_desc[i].block_read = pata_read;
+		pata_dev_desc[i].block_write = pata_write;
+
+		rc = init_pata(i);
+		rc = scan_pata(i);
+		if ((pata_dev_desc[i].lba > 0) && (pata_dev_desc[i].blksz > 0))
+			init_part(&pata_dev_desc[i]);
+	}
+	pata_curr_device = 0;
+	return rc;
+}
+
+block_dev_desc_t *pata_get_dev(int dev)
+{
+	return (dev < CONFIG_SYS_ATA_MAX_DEVICE) ? &pata_dev_desc[dev] : NULL;
+}
+
+int do_pata(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int rc = 0;
+
+	if (argc == 2 && strcmp(argv[1], "init") == 0)
+		return pata_initialize();
+
+	/* If the user has not yet run `pata init`, do it now */
+	if (pata_curr_device == -1)
+		if (pata_initialize())
+			return 1;
+
+	switch (argc) {
+	case 0:
+	case 1:
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	case 2:
+		if (strncmp(argv[1], "inf", 3) == 0) {
+			int i;
+			putc('\n');
+			for (i = 0; i < CONFIG_SYS_ATA_MAX_DEVICE; ++i) {
+				if (pata_dev_desc[i].type == DEV_TYPE_UNKNOWN)
+					continue;
+				printf("PATA device %d: ", i);
+				dev_print(&pata_dev_desc[i]);
+			}
+			return 0;
+		} else if (strncmp(argv[1], "dev", 3) == 0) {
+			if ((pata_curr_device < 0) || \
+					(pata_curr_device >= CONFIG_SYS_ATA_MAX_DEVICE)) {
+				puts("\nno PATA devices available\n");
+				return 1;
+			}
+			printf("\nPATA device %d: ", pata_curr_device);
+			dev_print(&pata_dev_desc[pata_curr_device]);
+			return 0;
+		} else if (strncmp(argv[1], "part", 4) == 0) {
+			int dev, ok;
+
+			for (ok = 0, dev = 0; dev < CONFIG_SYS_ATA_MAX_DEVICE; ++dev) {
+				if (pata_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
+					++ok;
+					if (dev)
+						putc('\n');
+					print_part(&pata_dev_desc[dev]);
+				}
+			}
+			if (!ok) {
+				puts("\nno PATA devices available\n");
+				rc++;
+			}
+			return rc;
+		}
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	case 3:
+		if (strncmp(argv[1], "dev", 3) == 0) {
+			int dev = (int)simple_strtoul(argv[2], NULL, 10);
+
+			printf("\nPATA device %d: ", dev);
+			if (dev >= CONFIG_SYS_ATA_MAX_DEVICE) {
+				puts("unknown device\n");
+				return 1;
+			}
+			dev_print(&pata_dev_desc[dev]);
+
+			if (pata_dev_desc[dev].type == DEV_TYPE_UNKNOWN)
+				return 1;
+
+			pata_curr_device = dev;
+
+			puts("... is now current device\n");
+
+			return 0;
+		} else if (strncmp(argv[1], "part", 4) == 0) {
+			int dev = (int)simple_strtoul(argv[2], NULL, 10);
+
+			if (pata_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
+				print_part(&pata_dev_desc[dev]);
+			} else {
+				printf("\nPATA device %d not available\n", dev);
+				rc = 1;
+			}
+			return rc;
+		}
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+
+	default: /* at least 4 args */
+		if (strcmp(argv[1], "read") == 0) {
+			ulong addr = simple_strtoul(argv[2], NULL, 16);
+			ulong cnt = simple_strtoul(argv[4], NULL, 16);
+			ulong n;
+			lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
+
+			printf("\nPATA read: device %d block # %ld, count %ld ... ",
+				pata_curr_device, blk, cnt);
+
+			n = pata_read(pata_curr_device, blk, cnt, (u32 *)addr);
+
+			/* flush cache after read */
+			flush_cache(addr, cnt * pata_dev_desc[pata_curr_device].blksz);
+
+			printf("%ld blocks read: %s\n",
+				n, (n == cnt) ? "OK" : "ERROR");
+			return (n == cnt) ? 0 : 1;
+		} else if (strcmp(argv[1], "write") == 0) {
+			ulong addr = simple_strtoul(argv[2], NULL, 16);
+			ulong cnt = simple_strtoul(argv[4], NULL, 16);
+			ulong n;
+
+			lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
+
+			printf("\nPATA write: device %d block # %ld, count %ld ... ",
+				pata_curr_device, blk, cnt);
+
+			n = pata_write(pata_curr_device, blk, cnt, (u32 *)addr);
+
+			printf("%ld blocks written: %s\n",
+				n, (n == cnt) ? "OK" : "ERROR");
+			return (n == cnt) ? 0 : 1;
+		} else {
+			printf("Usage:\n%s\n", cmdtp->usage);
+			rc = 1;
+		}
+
+		return rc;
+	}
+}
+
+U_BOOT_CMD(
+	pata, 5, 1, do_pata,
+	"pata	- PATA sub system\n",
+	"pata info - show available PATA devices\n"
+	"pata device [dev] - show or set current device\n"
+	"pata part [dev] - print partition table\n"
+	"pata read addr blk# cnt\n"
+	"pata write addr blk# cnt\n");