From dccf8be4b40ede12941ff347781fbff9330b2280 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Wed, 12 Nov 2014 14:18:55 +0100
Subject: Pass ide and hd kernel options to ide driver

* linux/dev/drivers/block/genhd.c: Include <linux/hdreg.h> and
<alloca.h>
(device_setup): Look for ide and hd options, and call ide_setup with
them.
* linux/src/drivers/block/ide.c (ide_setup) [MACH]: Parse hd[0-7] instead
of hd[a-h].
---
 linux/dev/drivers/block/genhd.c | 26 ++++++++++++++++++++++++++
 linux/src/drivers/block/ide.c   | 12 ++++++++++++
 2 files changed, 38 insertions(+)

(limited to 'linux')

diff --git a/linux/dev/drivers/block/genhd.c b/linux/dev/drivers/block/genhd.c
index 95b499b..3a86138 100644
--- a/linux/dev/drivers/block/genhd.c
+++ b/linux/dev/drivers/block/genhd.c
@@ -27,6 +27,8 @@
 #ifdef CONFIG_BLK_DEV_INITRD
 #include <linux/blk.h>
 #endif
+#include <linux/hdreg.h>
+#include <alloca.h>
 
 #include <asm/system.h>
 
@@ -768,12 +770,36 @@ static void setup_dev(struct gendisk *dev)
 void device_setup(void)
 {
 	extern void console_map_init(void);
+	extern char *kernel_cmdline;
+	char *c, *param, *white;
 	struct gendisk *p;
 	int nr=0;
 #ifdef MACH
 	linux_intr_pri = SPL6;
 #endif
 
+	for (c = kernel_cmdline; c; )
+	{
+		param = strstr(c, " ide");
+		if (!param)
+			param = strstr(c, " hd");
+		if (!param)
+			break;
+		if (param) {
+			param++;
+			white = strchr(param, ' ');
+			if (!white) {
+				ide_setup(param);
+				c = NULL;
+			} else {
+				char *word = alloca(white - param + 1);
+				strncpy(word, param, white - param);
+				word[white-param] = '\0';
+				ide_setup(word);
+				c = white + 1;
+			}
+		}
+	}
 #ifndef MACH
 	chr_dev_init();
 #endif
diff --git a/linux/src/drivers/block/ide.c b/linux/src/drivers/block/ide.c
index 9b9ecc2..7b639f7 100644
--- a/linux/src/drivers/block/ide.c
+++ b/linux/src/drivers/block/ide.c
@@ -3152,7 +3152,11 @@ void ide_setup (char *s)
 	ide_hwif_t *hwif;
 	ide_drive_t *drive;
 	unsigned int hw, unit;
+#ifdef MACH
+	const char max_drive = '0' + ((MAX_HWIFS * MAX_DRIVES) - 1);
+#else
 	const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
+#endif
 	const char max_hwif  = '0' + (MAX_HWIFS - 1);
 
 	printk("ide_setup: %s", s);
@@ -3161,11 +3165,19 @@ void ide_setup (char *s)
 	/*
 	 * Look for drive options:  "hdx="
 	 */
+#ifdef MACH
+	if (s[0] == 'h' && s[1] == 'd' && s[2] >= '0' && s[2] <= max_drive) {
+#else
 	if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
+#endif
 		const char *hd_words[] = {"none", "noprobe", "nowerr", "cdrom",
 				"serialize", "autotune", "noautotune",
 				"slow", "ide-scsi", NULL};
+#ifdef MACH
+		unit = s[2] - '0';
+#else
 		unit = s[2] - 'a';
+#endif
 		hw   = unit / MAX_DRIVES;
 		unit = unit % MAX_DRIVES;
 		hwif = &ide_hwifs[hw];
-- 
cgit v1.2.3