From: Edgar Grimberg <edgar.grimberg@zylin.com>
To: ecos-patches@ecos.sourceware.org
Subject: IO FLASH and caches
Date: Fri, 16 Oct 2009 07:41:00 -0000 [thread overview]
Message-ID: <d0f570ed0910160041h43d8a621ubb138f2cc98f9cd6@mail.gmail.com> (raw)
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Hi,
The attached patch handles the case where the CPU cannot disable
caches and needs to provide an uncached address instead. The fix was
tested with a NIOS2 CPU.
Regards,
Edgar
--
Edgar Grimberg
System Developer
Zylin AS
ZY1000 JTAG Debugger http://www.zylin.com/zy1000.html
Phone: (+47) 51 63 25 00
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[-- Type: text/plain, Size: 1875 bytes --]
Index: current/ChangeLog
===================================================================
RCS file: /cvs/ecos/ecos/packages/io/flash/current/ChangeLog,v
retrieving revision 1.53
diff -u -r1.53 ChangeLog
--- current/ChangeLog 1 Jul 2009 18:52:09 -0000 1.53
+++ current/ChangeLog 16 Oct 2009 07:36:48 -0000
@@ -1,3 +1,8 @@
+2009-10-16 Edgar Grimberg <edgar.grimberg@zylin.com>
+
+ * src/flash.c: Handles the case where the CPU cannot disable caches and needs
+ to provide an uncached address instead
+
2009-03-02 Sergei Gavrikov <sergei.gavrikov@gmail.com>
* doc/flash.sgml: Fixed typos in a FLASH API listing.
Index: current/src/flash.c
===================================================================
RCS file: /cvs/ecos/ecos/packages/io/flash/current/src/flash.c,v
retrieving revision 1.32
diff -u -r1.32 flash.c
--- current/src/flash.c 20 Feb 2009 22:06:15 -0000 1.32
+++ current/src/flash.c 16 Oct 2009 07:36:48 -0000
@@ -106,6 +106,12 @@
#define CHECK_SOFT_WRITE_PROTECT(_addr_, _len_) CYG_EMPTY_STATEMENT
#endif
+#ifdef CYGARC_UNCACHED_ADDRESS
+# define UNCACHED_ADDRESS(_x_) CYGARC_UNCACHED_ADDRESS(_x_)
+#else
+# define UNCACHED_ADDRESS(_x_) _x_
+#endif
+
// Has the FLASH IO library been initialised?
static bool init;
@@ -622,10 +628,14 @@
stat = dev->funs->flash_program(dev, addr, ram, this_write);
#ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM
if (CYG_FLASH_ERR_OK == stat) // Claims to be OK
- if (!dev->funs->flash_read && memcmp((void *)addr, ram, this_write) != 0) {
+ {
+ cyg_flashaddr_t unchached_addr;
+ unchached_addr = UNCACHED_ADDRESS(addr);
+ if (!dev->funs->flash_read && memcmp((volatile void *)unchached_addr, ram, this_write) != 0) {
stat = CYG_FLASH_ERR_DRV_VERIFY;
CHATTER(dev, "V");
}
+ }
#endif
if (CYG_FLASH_ERR_OK != stat) {
if (err_address)
next reply other threads:[~2009-10-16 7:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-16 7:41 Edgar Grimberg [this message]
2009-10-16 11:04 ` Nick Garnett
2009-10-16 12:30 ` Edgar Grimberg
2009-10-16 12:58 ` Nick Garnett
2009-10-16 13:23 ` Edgar Grimberg
2009-10-16 13:15 ` Bart Veer
2009-10-16 13:37 ` Edgar Grimberg
2009-10-16 14:41 ` Bart Veer
2009-10-16 14:57 ` Edgar Grimberg
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