r1749
dslinux_amadeus at dslinux.in-berlin.de
dslinux_amadeus at dslinux.in-berlin.de
Mon Apr 30 23:52:31 CEST 2007
Author: amadeus
Date: 2007-04-30 23:52:25 +0200 (Mon, 30 Apr 2007)
New Revision: 1749
Log:
Add untested support for EZ-4 and EZ-5 Tripple Pack.
Modified: trunk/linux-2.6.x/arch/arm/mach-nds/gbaram.c
===================================================================
--- trunk/linux-2.6.x/arch/arm/mach-nds/gbaram.c 2007-04-29 18:40:59 UTC (rev 1748)
+++ trunk/linux-2.6.x/arch/arm/mach-nds/gbaram.c 2007-04-30 21:52:25 UTC (rev 1749)
@@ -124,6 +124,59 @@
//==========================================================================
/*
+ * EZ-4 and EZ-5 Tripple Pack Memory Extension RAM/IO switching.
+ */
+
+/* Set the mode of EZ to I/O */
+static void ez_set_io(void)
+{
+ writew(0xd200, 0x9fe0000);
+ writew(0x1500, 0x8000000);
+ writew(0xd200, 0x8020000);
+ writew(0x1500, 0x8040000);
+
+ writew(0x0001, 0x9400000);
+
+ writew(0x1500, 0x9C40000);
+ writew(0x1500, 0x9fc0000);
+}
+
+/* Set the mode of EZ to PSRAM */
+static void ez_set_ram(void)
+{
+ // CloseNorWrite()
+ writew(0xd200, 0x9fe0000);
+ writew(0x1500, 0x8000000);
+ writew(0xd200, 0x8020000);
+ writew(0x1500, 0x8040000);
+
+ writew(0x0000, 0x9400000); // and DisableSD
+
+ writew(0xd200, 0x9C40000);
+ writew(0x1500, 0x9fc0000);
+
+ // SetRomPage(384) == PSRAM
+ writew(0xd200, 0x9fe0000);
+ writew(0x1500, 0x8000000);
+ writew(0xd200, 0x8020000);
+ writew(0x1500, 0x8040000);
+
+ writew(384, 0x9880000);
+ writew(0x1500, 0x9fc0000);
+
+ // OpenNorWrite()
+ writew(0xd200, 0x9fe0000);
+ writew(0x1500, 0x8000000);
+ writew(0xd200, 0x8020000);
+ writew(0x1500, 0x8040000);
+
+ writew(0x1500, 0x9C40000);
+ writew(0x1500, 0x9fc0000);
+}
+
+//==========================================================================
+
+/*
* Test if the memory area is working RAM.
* @param addr Start address of area
* @param length Area length in bytes
@@ -185,6 +238,8 @@
if (gba_testcard(m3_set_ram, m3_set_io, 0x08000000, 0x02000000)) goto activated;
/* test Opera Memory Extension */
if (gba_testcard(op_set_ram, op_set_io, 0x09000000, 0x00800000)) goto activated;
+ /* test EZ Memory Extension */
+ if (gba_testcard(ez_set_ram, ez_set_io, 0x08000000, 0x01000000)) goto activated;
/* insert other adaptors here */
More information about the dslinux-commit
mailing list