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From: Vicente <vicencb@gmail.com>
To: barebox@lists.infradead.org
Cc: Vicente <vicencb@gmail.com>
Subject: [PATCH 08/14] uimage: improve transfer speed
Date: Tue,  9 Oct 2012 00:55:18 +0200	[thread overview]
Message-ID: <1349736924-24667-9-git-send-email-vicencb@gmail.com> (raw)
In-Reply-To: <1349736924-24667-1-git-send-email-vicencb@gmail.com>


Signed-off-by: Vicente <vicencb@gmail.com>
---
 common/uimage.c | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/common/uimage.c b/common/uimage.c
index c72db41..8f8736f 100644
--- a/common/uimage.c
+++ b/common/uimage.c
@@ -28,6 +28,8 @@
 #include <rtc.h>
 #include <filetype.h>
 #include <memory.h>
+#include <linux/stat.h>
+#include <sizes.h>
 
 #ifdef CONFIG_UIMAGE_MULTI
 static inline int uimage_is_multi_image(struct uimage_handle *handle)
@@ -380,15 +382,36 @@ struct resource *file_to_sdram(const char *filename, unsigned long adr)
 	struct resource *res;
 	size_t size = BUFSIZ;
 	size_t ofs = 0;
+	size_t now;
 	int fd;
+	struct stat s;
 
 	fd = open(filename, O_RDONLY);
 	if (fd < 0)
 		return NULL;
 
-	while (1) {
-		size_t now;
+	/* TODO: use fstat(fd, &s) when implemented and avoid reopening file */
+	if (stat(filename, &s) == 0 && s.st_size <= SZ_1G) {
+		/*
+		 * As the file size is known we can read it at once and improve
+		 * transfer speed.
+		 */
+		size = s.st_size;
+		res = request_sdram_region("image", adr, size);
+		if (!res) {
+			printf("unable to request SDRAM 0x%08lx-0x%08lx\n",
+				adr, adr + size - 1);
+			goto out;
+		}
 
+		now = read_full(fd, (void *)(res->start), size);
+		if (now < size) {
+			release_sdram_region(res);
+			res = NULL;
+		}
+		goto out;
+	}
+	while (1) {
 		res = request_sdram_region("image", adr, size);
 		if (!res) {
 			printf("unable to request SDRAM 0x%08lx-0x%08lx\n",
-- 
1.7.12.2


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  parent reply	other threads:[~2012-10-08 22:55 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-08 22:55 [PATCH 00/14] archosg9: add support for tablet Vicente
2012-10-08 22:55 ` [PATCH 01/14] twl6030: add debug info Vicente
2012-10-08 22:55 ` [PATCH 02/14] omap4: add rename definitions to match datasheet Vicente
2012-10-08 22:55 ` [PATCH 03/14] ARM: import irq handling from linux Vicente
2012-10-08 22:55 ` [PATCH 04/14] ARM: ensure irqs are disabled Vicente
2012-10-08 22:55 ` [PATCH 05/14] omap: revert gpiolib Vicente
2012-10-08 22:55 ` [PATCH 06/14] omap4: add usb boot source Vicente
2012-10-08 22:55 ` [PATCH 07/14] bootm: close open files Vicente
2012-10-08 22:55 ` Vicente [this message]
2012-10-08 22:55 ` [PATCH 09/14] fs: improve robustness Vicente
2012-10-08 22:55 ` [PATCH 10/14] omap4: add support for booting cpu from usb Vicente
2012-10-08 22:55 ` [PATCH 11/14] omap4: add serial communications over usb boot Vicente
2012-10-08 22:55 ` [PATCH 12/14] omap4: add filesystem support " Vicente
2012-10-08 22:55 ` [PATCH 13/14] omap4: add support for loading second stage from usb Vicente
2012-10-08 22:55 ` [PATCH 14/14] Add support for Archos G9 tablet Vicente
2012-10-19 11:10   ` Jan Weitzel
2012-10-21  1:00     ` vj
2012-10-22  6:50       ` Jan Weitzel
2012-10-10  7:40 ` [PATCH 00/14] archosg9: add support for tablet Sascha Hauer
     [not found]   ` <CAAMcf8D0Xn6aWztkD=8dnv3P1qxNgxSV-2Q37kGOaRsOQE7xVA@mail.gmail.com>
2012-10-10  9:32     ` Sascha Hauer
2012-10-12  1:12       ` vj
     [not found]       ` <CAAMcf8CLimKWZddBfctSCct0wOJOk7tgTJpM7m_w8h5dOQRt1Q@mail.gmail.com>
2012-10-12  8:39         ` Sascha Hauer

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