1 files changed, 376 insertions, 0 deletions
diff --git a/roms/u-boot/api/api_storage.c b/roms/u-boot/api/api_storage.c
new file mode 100644
index 000000000..a0dacad1a
--- /dev/null
+++ b/roms/u-boot/api/api_storage.c
@@ -0,0 +1,376 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2007-2008 Semihalf
+ *
+ * Written by: Rafal Jaworowski <raj@semihalf.com>
+ */
+
+#include <config.h>
+#include <common.h>
+#include <api_public.h>
+#include <part.h>
+
+#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
+#include <usb.h>
+#endif
+
+#define DEBUG
+#undef DEBUG
+
+#ifdef DEBUG
+#define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt, ##args); } while (0)
+#else
+#define debugf(fmt, args...)
+#endif
+
+#define errf(fmt, args...) do { printf("ERROR @ %s(): ", __func__); printf(fmt, ##args); } while (0)
+
+
+#define ENUM_IDE	0
+#define ENUM_USB	1
+#define ENUM_SCSI	2
+#define ENUM_MMC	3
+#define ENUM_SATA	4
+#define ENUM_MAX	5
+
+struct stor_spec {
+	int		max_dev;
+	int		enum_started;
+	int		enum_ended;
+	int		type;	/* "external" type: DT_STOR_{IDE,USB,etc} */
+	char		*name;
+};
+
+static struct stor_spec specs[ENUM_MAX] = { { 0, 0, 0, 0, NULL }, };
+
+#ifndef CONFIG_SYS_MMC_MAX_DEVICE
+#define CONFIG_SYS_MMC_MAX_DEVICE	1
+#endif
+
+void dev_stor_init(void)
+{
+#if defined(CONFIG_IDE)
+	specs[ENUM_IDE].max_dev = CONFIG_SYS_IDE_MAXDEVICE;
+	specs[ENUM_IDE].enum_started = 0;
+	specs[ENUM_IDE].enum_ended = 0;
+	specs[ENUM_IDE].type = DEV_TYP_STOR | DT_STOR_IDE;
+	specs[ENUM_IDE].name = "ide";
+#endif
+#if defined(CONFIG_CMD_MMC)
+	specs[ENUM_MMC].max_dev = CONFIG_SYS_MMC_MAX_DEVICE;
+	specs[ENUM_MMC].enum_started = 0;
+	specs[ENUM_MMC].enum_ended = 0;
+	specs[ENUM_MMC].type = DEV_TYP_STOR | DT_STOR_MMC;
+	specs[ENUM_MMC].name = "mmc";
+#endif
+#if defined(CONFIG_SATA)
+	specs[ENUM_SATA].max_dev = CONFIG_SYS_SATA_MAX_DEVICE;
+	specs[ENUM_SATA].enum_started = 0;
+	specs[ENUM_SATA].enum_ended = 0;
+	specs[ENUM_SATA].type = DEV_TYP_STOR | DT_STOR_SATA;
+	specs[ENUM_SATA].name = "sata";
+#endif
+#if defined(CONFIG_SCSI)
+	specs[ENUM_SCSI].max_dev = CONFIG_SYS_SCSI_MAX_DEVICE;
+	specs[ENUM_SCSI].enum_started = 0;
+	specs[ENUM_SCSI].enum_ended = 0;
+	specs[ENUM_SCSI].type = DEV_TYP_STOR | DT_STOR_SCSI;
+	specs[ENUM_SCSI].name = "scsi";
+#endif
+#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
+	specs[ENUM_USB].max_dev = USB_MAX_STOR_DEV;
+	specs[ENUM_USB].enum_started = 0;
+	specs[ENUM_USB].enum_ended = 0;
+	specs[ENUM_USB].type = DEV_TYP_STOR | DT_STOR_USB;
+	specs[ENUM_USB].name = "usb";
+#endif
+}
+
+/*
+ * Finds next available device in the storage group
+ *
+ * type:	storage group type - ENUM_IDE, ENUM_SCSI etc.
+ *
+ * more:	returns 0/1 depending if there are more devices in this group
+ *		available (for future iterations)
+ *
+ * returns:	0/1 depending if device found in this iteration
+ */
+static int dev_stor_get(int type, int *more, struct device_info *di)
+{
+	struct blk_desc *dd;
+	int found = 0;
+	int found_last = 0;
+	int i = 0;
+
+	/* Wasn't configured for this type, return 0 directly */
+	if (specs[type].name == NULL)
+		return 0;
+
+	if (di->cookie != NULL) {
+		/* Find the last device we've returned  */
+		for (i = 0; i < specs[type].max_dev; i++) {
+			if (di->cookie ==
+			    (void *)blk_get_dev(specs[type].name, i)) {
+				i += 1;
+				found_last = 1;
+				break;
+			}
+		}
+
+		if (!found_last)
+			i = 0;
+	}
+
+	for (; i < specs[type].max_dev; i++) {
+		di->cookie = (void *)blk_get_dev(specs[type].name, i);
+
+		if (di->cookie != NULL) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (i == specs[type].max_dev)
+		*more = 0;
+	else
+		*more = 1;
+
+	if (found) {
+		di->type = specs[type].type;
+
+		dd = (struct blk_desc *)di->cookie;
+		if (dd->type == DEV_TYPE_UNKNOWN) {
+			debugf("device instance exists, but is not active..");
+			found = 0;
+		} else {
+			di->di_stor.block_count = dd->lba;
+			di->di_stor.block_size = dd->blksz;
+		}
+	} else {
+		di->cookie = NULL;
+	}
+
+	return found;
+}
+
+
+/* returns: ENUM_IDE, ENUM_USB etc. based on struct blk_desc */
+
+static int dev_stor_type(struct blk_desc *dd)
+{
+	int i, j;
+
+	for (i = ENUM_IDE; i < ENUM_MAX; i++)
+		for (j = 0; j < specs[i].max_dev; j++)
+			if (dd == blk_get_dev(specs[i].name, j))
+				return i;
+
+	return ENUM_MAX;
+}
+
+
+/* returns: 0/1 whether cookie points to some device in this group */
+
+static int dev_is_stor(int type, struct device_info *di)
+{
+	return (dev_stor_type(di->cookie) == type) ? 1 : 0;
+}
+
+
+static int dev_enum_stor(int type, struct device_info *di)
+{
+	int found = 0, more = 0;
+
+	debugf("called, type %d\n", type);
+
+	/*
+	 * Formulae for enumerating storage devices:
+	 * 1. if cookie (hint from previous enum call) is NULL we start again
+	 *    with enumeration, so return the first available device, done.
+	 *
+	 * 2. if cookie is not NULL, check if it identifies some device in
+	 *    this group:
+	 *
+	 * 2a. if cookie is a storage device from our group (IDE, USB etc.),
+	 *     return next available (if exists) in this group
+	 *
+	 * 2b. if it isn't device from our group, check if such devices were
+	 *     ever enumerated before:
+	 *     - if not, return the first available device from this group
+	 *     - else return 0
+	 */
+
+	if (di->cookie == NULL) {
+		debugf("group%d - enum restart\n", type);
+
+		/*
+		 * 1. Enumeration (re-)started: take the first available
+		 * device, if exists
+		 */
+		found = dev_stor_get(type, &more, di);
+		specs[type].enum_started = 1;
+
+	} else if (dev_is_stor(type, di)) {
+		debugf("group%d - enum continued for the next device\n", type);
+
+		if (specs[type].enum_ended) {
+			debugf("group%d - nothing more to enum!\n", type);
+			return 0;
+		}
+
+		/* 2a. Attempt to take a next available device in the group */
+		found = dev_stor_get(type, &more, di);
+
+	} else {
+		if (specs[type].enum_ended) {
+			debugf("group %d - already enumerated, skipping\n", type);
+			return 0;
+		}
+
+		debugf("group%d - first time enum\n", type);
+
+		if (specs[type].enum_started == 0) {
+			/*
+			 * 2b.  If enumerating devices in this group did not
+			 * happen before, it means the cookie pointed to a
+			 * device from some other group (another storage
+			 * group, or network); in this case try to take the
+			 * first available device from our group
+			 */
+			specs[type].enum_started = 1;
+
+			/*
+			 * Attempt to take the first device in this group:
+			 *'first element' flag is set
+			 */
+			found = dev_stor_get(type, &more, di);
+
+		} else {
+			errf("group%d - out of order iteration\n", type);
+			found = 0;
+			more = 0;
+		}
+	}
+
+	/*
+	 * If there are no more devices in this group, consider its
+	 * enumeration finished
+	 */
+	specs[type].enum_ended = (!more) ? 1 : 0;
+
+	if (found)
+		debugf("device found, returning cookie 0x%08x\n",
+		       (u_int32_t)di->cookie);
+	else
+		debugf("no device found\n");
+
+	return found;
+}
+
+void dev_enum_reset(void)
+{
+	int i;
+
+	for (i = 0; i < ENUM_MAX; i ++) {
+		specs[i].enum_started = 0;
+		specs[i].enum_ended = 0;
+	}
+}
+
+int dev_enum_storage(struct device_info *di)
+{
+	int i;
+
+	/* check: ide, usb, scsi, mmc */
+	for (i = ENUM_IDE; i < ENUM_MAX; i ++) {
+		if (dev_enum_stor(i, di))
+			return 1;
+	}
+
+	return 0;
+}
+
+static int dev_stor_is_valid(int type, struct blk_desc *dd)
+{
+	int i;
+
+	for (i = 0; i < specs[type].max_dev; i++)
+		if (dd == blk_get_dev(specs[type].name, i))
+			if (dd->type != DEV_TYPE_UNKNOWN)
+				return 1;
+
+	return 0;
+}
+
+
+int dev_open_stor(void *cookie)
+{
+	int type = dev_stor_type(cookie);
+
+	if (type == ENUM_MAX)
+		return API_ENODEV;
+
+	if (dev_stor_is_valid(type, (struct blk_desc *)cookie))
+		return 0;
+
+	return API_ENODEV;
+}
+
+
+int dev_close_stor(void *cookie)
+{
+	/*
+	 * Not much to do as we actually do not alter storage devices upon
+	 * close
+	 */
+	return 0;
+}
+
+
+lbasize_t dev_read_stor(void *cookie, void *buf, lbasize_t len, lbastart_t start)
+{
+	int type;
+	struct blk_desc *dd = (struct blk_desc *)cookie;
+
+	if ((type = dev_stor_type(dd)) == ENUM_MAX)
+		return 0;
+
+	if (!dev_stor_is_valid(type, dd))
+		return 0;
+
+#ifdef CONFIG_BLK
+	return blk_dread(dd, start, len, buf);
+#else
+	if ((dd->block_read) == NULL) {
+		debugf("no block_read() for device 0x%08x\n", cookie);
+		return 0;
+	}
+
+	return dd->block_read(dd, start, len, buf);
+#endif	/* defined(CONFIG_BLK) */
+}
+
+
+lbasize_t dev_write_stor(void *cookie, void *buf, lbasize_t len, lbastart_t start)
+{
+	struct blk_desc *dd = (struct blk_desc *)cookie;
+	int type = dev_stor_type(dd);
+
+	if (type == ENUM_MAX)
+		return 0;
+
+	if (!dev_stor_is_valid(type, dd))
+		return 0;
+
+#ifdef CONFIG_BLK
+	return blk_dwrite(dd, start, len, buf);
+#else
+	if (dd->block_write == NULL) {
+		debugf("no block_write() for device 0x%08x\n", cookie);
+		return 0;
+	}
+
+	return dd->block_write(dd, start, len, buf);
+#endif	/* defined(CONFIG_BLK) */
+}