From 842a4ad19b6bf5b2376a578478e109453f5bdd89 Mon Sep 17 00:00:00 2001
From: Andy Green <andy@openmoko.com>
Date: Mon, 1 Dec 2008 01:26:05 +0000
Subject: [PATCH] qi-kernel-source-skip-if-ui-key-down.patch

Signed-off-by: Andy Green <andy@openmoko.com>
---
 qiboot/src/cpu/s3c2442/nand_read.c |  6 ++++++
 qiboot/src/fs/dev.c                |  6 ++++++
 qiboot/src/phase2.c                | 31 ++++++++++++++++--------------
 3 files changed, 29 insertions(+), 14 deletions(-)

diff --git a/qiboot/src/cpu/s3c2442/nand_read.c b/qiboot/src/cpu/s3c2442/nand_read.c
index cb2a2de..bec2e8b 100644
--- a/qiboot/src/cpu/s3c2442/nand_read.c
+++ b/qiboot/src/cpu/s3c2442/nand_read.c
@@ -143,6 +143,12 @@ int nand_read_ll(unsigned char *buf, unsigned long start_block512,
 		start_block512 += j;
 		buf += j << 9;
 		blocks512 -= j;
+
+		if (this_board->get_ui_keys)
+			if ((this_board->get_ui_keys)() & UI_ACTION_SKIPKERNEL) {
+				puts(" ** skipping \n");
+				return -3;
+			}
 	}
 
 	/* chip Disable */
diff --git a/qiboot/src/fs/dev.c b/qiboot/src/fs/dev.c
index 694c8b1..8ffcf2d 100644
--- a/qiboot/src/fs/dev.c
+++ b/qiboot/src/fs/dev.c
@@ -52,6 +52,12 @@ int ext2fs_devread(int sector, int filesystem_block_log2, int byte_offset, int b
 		return 0;
 	}
 
+	if (this_board->get_ui_keys)
+		if ((this_board->get_ui_keys)() & UI_ACTION_SKIPKERNEL) {
+			puts(" ** skipping \n");
+			return 0;
+		}
+
 /*
  *  Get the read to the beginning of a partition.
  */
diff --git a/qiboot/src/phase2.c b/qiboot/src/phase2.c
index 30c9b15..2ce7829 100644
--- a/qiboot/src/phase2.c
+++ b/qiboot/src/phase2.c
@@ -45,6 +45,7 @@ int raise(int n)
 int read_file(const char * filepath, u8 * destination, int size)
 {
 	int len = size;
+	int ret;
 
 	switch (this_kernel->filesystem) {
 	case FS_EXT2:
@@ -60,7 +61,11 @@ int read_file(const char * filepath, u8 * destination, int size)
 			return -1;
 		}
 		puts(" OK\n");
-		ext2fs_read((char *)destination, size);
+		ret = ext2fs_read((char *)destination, size);
+		if (ret < 0) {
+			puts(" Read failed\n");
+			return -1;
+		}
 		break;
 
 	case FS_FAT:
@@ -282,26 +287,24 @@ void bootloader_second_phase(void)
 
 		/* kernel commandline */
 
-		if (*p) {
-			cmdline = params->u.cmdline.cmdline;
-			cmdline += strlen(strcpy(cmdline, p));
-			if (this_kernel->commandline_append)
-				cmdline += strlen(strcpy(cmdline,
+		cmdline = params->u.cmdline.cmdline;
+		cmdline += strlen(strcpy(cmdline, p));
+		if (this_kernel->commandline_append)
+			cmdline += strlen(strcpy(cmdline,
 					      this_kernel->commandline_append));
 			if (commandline_rootfs_append[0])
 				cmdline += strlen(strcpy(cmdline,
 					      commandline_rootfs_append));
 
-			params->hdr.tag = ATAG_CMDLINE;
-			params->hdr.size = (sizeof (struct tag_header) +
-				strlen(params->u.cmdline.cmdline) + 1 + 4) >> 2;
+		params->hdr.tag = ATAG_CMDLINE;
+		params->hdr.size = (sizeof (struct tag_header) +
+			strlen(params->u.cmdline.cmdline) + 1 + 4) >> 2;
 
-			puts("      Cmdline: ");
-			puts(params->u.cmdline.cmdline);
-			puts("\n");
+		puts("      Cmdline: ");
+		puts(params->u.cmdline.cmdline);
+		puts("\n");
 
-			params = tag_next (params);
-		}
+		params = tag_next (params);
 
 		/* needs to always be the last tag */
 		params->hdr.tag = ATAG_NONE;