summaryrefslogtreecommitdiff
path: root/board/dave/PPChameleonEVB
diff options
context:
space:
mode:
authorBartlomiej Sieka <tur@semihalf.com>2006-02-24 09:37:22 +0100
committerBartlomiej Sieka <tur@pollux.(none)>2006-02-24 09:37:22 +0100
commit038ccac511214b062c56f22b9413f784b86bcd87 (patch)
tree9925a8bb04e791550c76e864c5821b12fc478e2e /board/dave/PPChameleonEVB
parent84e106c09d324e345f335d2edef246d0b4c9131a (diff)
parent8e9655f863246db60c51140153186acc2afdc855 (diff)
downloadu-boot-imx-038ccac511214b062c56f22b9413f784b86bcd87.zip
u-boot-imx-038ccac511214b062c56f22b9413f784b86bcd87.tar.gz
u-boot-imx-038ccac511214b062c56f22b9413f784b86bcd87.tar.bz2
Merge with /home/wd/git/u-boot/testing-NAND/ to add new NAND handling.
Diffstat (limited to 'board/dave/PPChameleonEVB')
-rw-r--r--board/dave/PPChameleonEVB/Makefile2
-rw-r--r--board/dave/PPChameleonEVB/PPChameleonEVB.c27
-rw-r--r--board/dave/PPChameleonEVB/config.mk9
-rw-r--r--board/dave/PPChameleonEVB/nand.c147
4 files changed, 154 insertions, 31 deletions
diff --git a/board/dave/PPChameleonEVB/Makefile b/board/dave/PPChameleonEVB/Makefile
index 39d2fec..581a580 100644
--- a/board/dave/PPChameleonEVB/Makefile
+++ b/board/dave/PPChameleonEVB/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
-OBJS = $(BOARD).o flash.o
+OBJS = $(BOARD).o flash.o nand.o
$(LIB): $(OBJS) $(SOBJS)
$(AR) crv $@ $^
diff --git a/board/dave/PPChameleonEVB/PPChameleonEVB.c b/board/dave/PPChameleonEVB/PPChameleonEVB.c
index 5f2c705..52055b8 100644
--- a/board/dave/PPChameleonEVB/PPChameleonEVB.c
+++ b/board/dave/PPChameleonEVB/PPChameleonEVB.c
@@ -238,33 +238,6 @@ int testdram (void)
/* ------------------------------------------------------------------------- */
-#if (CONFIG_COMMANDS & CFG_CMD_NAND)
-extern ulong
-nand_probe(ulong physadr);
-
-void
-nand_init(void)
-{
- ulong totlen = 0;
-
-/*
- The HI model is equipped with a large block NAND chip not supported yet
- by U-Boot
- (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_HI)
-*/
-
-#if (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_ME)
- debug ("Probing at 0x%.8x\n", CFG_NAND0_BASE);
- totlen += nand_probe (CFG_NAND0_BASE);
-#endif /* CONFIG_PPCHAMELEON_MODULE_ME, CONFIG_PPCHAMELEON_MODULE_HI */
-
- debug ("Probing at 0x%.8x\n", CFG_NAND1_BASE);
- totlen += nand_probe (CFG_NAND1_BASE);
-
- printf ("%3lu MB\n", totlen >>20);
-}
-#endif
-
#ifdef CONFIG_CFB_CONSOLE
# ifdef CONFIG_CONSOLE_EXTRA_INFO
# include <video_fb.h>
diff --git a/board/dave/PPChameleonEVB/config.mk b/board/dave/PPChameleonEVB/config.mk
index 5856aec..6e03b72 100644
--- a/board/dave/PPChameleonEVB/config.mk
+++ b/board/dave/PPChameleonEVB/config.mk
@@ -1,5 +1,5 @@
#
-# (C) Copyright 2000
+# (C) Copyright 2000, 2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
@@ -22,7 +22,10 @@
#
# Reserve 256 kB for Monitor
-TEXT_BASE = 0xFFFC0000
+#TEXT_BASE = 0xFFFC0000
# Reserve 320 kB for Monitor
-#TEXT_BASE = 0xFFFB0000
+TEXT_BASE = 0xFFFB0000
+
+# Compile the new NAND code (needed iff #ifdef CONFIG_NEW_NAND_CODE)
+BOARDLIBS = drivers/nand/libnand.a
diff --git a/board/dave/PPChameleonEVB/nand.c b/board/dave/PPChameleonEVB/nand.c
new file mode 100644
index 0000000..16c67cd
--- /dev/null
+++ b/board/dave/PPChameleonEVB/nand.c
@@ -0,0 +1,147 @@
+/*
+ * (C) Copyright 2006 DENX Software Engineering
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+#ifdef CONFIG_NEW_NAND_CODE
+/* new NAND handling */
+
+#include <nand.h>
+
+/*
+ * hardware specific access to control-lines
+ * function borrowed from Linux 2.6 (drivers/mtd/nand/ppchameleonevb.c)
+ */
+static void ppchameleonevb_hwcontrol(struct mtd_info *mtdinfo, int cmd)
+{
+ struct nand_chip *this = mtdinfo->priv;
+ ulong base = (ulong) this->IO_ADDR_W;
+
+ switch(cmd) {
+ case NAND_CTL_SETCLE:
+ MACRO_NAND_CTL_SETCLE((unsigned long)base);
+ break;
+ case NAND_CTL_CLRCLE:
+ MACRO_NAND_CTL_CLRCLE((unsigned long)base);
+ break;
+ case NAND_CTL_SETALE:
+ MACRO_NAND_CTL_SETALE((unsigned long)base);
+ break;
+ case NAND_CTL_CLRALE:
+ MACRO_NAND_CTL_CLRALE((unsigned long)base);
+ break;
+ case NAND_CTL_SETNCE:
+ MACRO_NAND_ENABLE_CE((unsigned long)base);
+ break;
+ case NAND_CTL_CLRNCE:
+ MACRO_NAND_DISABLE_CE((unsigned long)base);
+ break;
+ }
+}
+
+
+/*
+ * read device ready pin
+ * function +/- borrowed from Linux 2.6 (drivers/mtd/nand/ppchameleonevb.c)
+ */
+static int ppchameleonevb_device_ready(struct mtd_info *mtdinfo)
+{
+ struct nand_chip *this = mtdinfo->priv;
+ ulong rb_gpio_pin;
+
+ /* use the base addr to find out which chip are we dealing with */
+ switch((ulong) this->IO_ADDR_W) {
+ case CFG_NAND0_BASE:
+ rb_gpio_pin = CFG_NAND0_RDY;
+ break;
+ case CFG_NAND1_BASE:
+ rb_gpio_pin = CFG_NAND1_RDY;
+ break;
+ default: /* this should never happen */
+ return 0;
+ break;
+ }
+
+ if (in32(GPIO0_IR) & rb_gpio_pin)
+ return 1;
+ return 0;
+}
+
+
+/*
+ * Board-specific NAND initialization. The following members of the
+ * argument are board-specific (per include/linux/mtd/nand_new.h):
+ * - IO_ADDR_R?: address to read the 8 I/O lines of the flash device
+ * - IO_ADDR_W?: address to write the 8 I/O lines of the flash device
+ * - hwcontrol: hardwarespecific function for accesing control-lines
+ * - dev_ready: hardwarespecific function for accesing device ready/busy line
+ * - enable_hwecc?: function to enable (reset) hardware ecc generator. Must
+ * only be provided if a hardware ECC is available
+ * - eccmode: mode of ecc, see defines
+ * - chip_delay: chip dependent delay for transfering data from array to
+ * read regs (tR)
+ * - options: various chip options. They can partly be set to inform
+ * nand_scan about special functionality. See the defines for further
+ * explanation
+ * Members with a "?" were not set in the merged testing-NAND branch,
+ * so they are not set here either.
+ */
+void board_nand_init(struct nand_chip *nand)
+{
+
+ nand->hwcontrol = ppchameleonevb_hwcontrol;
+ nand->dev_ready = ppchameleonevb_device_ready;
+ nand->eccmode = NAND_ECC_SOFT;
+ nand->chip_delay = NAND_BIG_DELAY_US;
+ nand->options = NAND_SAMSUNG_LP_OPTIONS;
+}
+
+#else
+
+/* old NAND handling */
+extern ulong
+nand_probe(ulong physadr);
+
+void
+nand_init(void)
+{
+ ulong totlen = 0;
+
+/*
+ The HI model is equipped with a large block NAND chip not supported yet
+ by U-Boot
+ (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_HI)
+*/
+
+#if (CONFIG_PPCHAMELEON_MODULE_MODEL == CONFIG_PPCHAMELEON_MODULE_ME)
+ debug ("Probing at 0x%.8x\n", CFG_NAND0_BASE);
+ totlen += nand_probe (CFG_NAND0_BASE);
+#endif /* CONFIG_PPCHAMELEON_MODULE_ME, CONFIG_PPCHAMELEON_MODULE_HI */
+
+ debug ("Probing at 0x%.8x\n", CFG_NAND1_BASE);
+ totlen += nand_probe (CFG_NAND1_BASE);
+
+ printf ("%3lu MB\n", totlen >>20);
+}
+#endif
+#endif