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authorSergey Kubushyn <ksi@koi8.net>2007-08-10 20:26:18 +0200
committerStefan Roese <sr@denx.de>2007-08-10 20:26:18 +0200
commitc74b2108e31fe09bd1c5d291c3cf360510d4f13e (patch)
tree513414e91717e83f1b78e468c912fc589da9094d /board/davinci/sonata/board_init.S
parentb0d2962faf200b816410893faff31e54287b9075 (diff)
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[ARM] TI DaVinci support, hopefully final
Add support for the following DaVinci boards: - DV_EVM - SCHMOOGIE - SONATA Changes: - Split into separate board directories - Removed changes to MTD_DEBUG (or whatever it's called) - New CONFIG_CMD party line followed - Some cosmetic fixes, cleanup etc. - Patches against the latest U-Boot tree as of now. - Fixed CONFIG_CMD_NET in net files. - Fixed CONFIG_CMD_EEPROM for schmoogie. - Made sure it compiles and works (forceenv() link problem) on SCHMOOGIE and DV_EVM. Can't check if it works on SONATA, don't have a board any more, but it at least compiles. Here is an excerpt from session log on SCHMOOGIE... U-Boot 1.2.0-g6c33c785-dirty (Aug 7 2007 - 13:07:17) DRAM: 128 MB NAND: 128 MiB In: serial Out: serial Err: serial ARM Clock : 297MHz DDR Clock : 162MHz ETH PHY : DP83848 @ 0x01 U-Boot > iprobe Valid chip addresses: 1B 38 3A 3D 3F 50 5D 6F U-Boot > ping 192.168.253.10 host 192.168.253.10 is alive U-Boot > Signed-off-by: Sergey Kubushyn <ksi@koi8.net> Acked-by: Dirk Behme <dirk.behme@gmail.com> Acked-by: Zach Sadecki <Zach.Sadecki@ripcode.com> Acked-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/davinci/sonata/board_init.S')
-rw-r--r--board/davinci/sonata/board_init.S100
1 files changed, 100 insertions, 0 deletions
diff --git a/board/davinci/sonata/board_init.S b/board/davinci/sonata/board_init.S
new file mode 100644
index 0000000..fbb9ea7
--- /dev/null
+++ b/board/davinci/sonata/board_init.S
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Board-specific low level initialization code. Called at the very end
+ * of cpu/arm926ejs/davinci/lowlevel_init.S. Just returns if there is no
+ * initialization required.
+ *
+ * For _OLDER_ Sonata boards sets up GPIO4 to control NAND WP line. Newer
+ * Sonata boards, AFAIK, don't use this so it's just return by default. Ask
+ * Visioneering if they reinvented the wheel once again to make sure :)
+ *
+ * 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 <config.h>
+
+.globl dv_board_init
+dv_board_init:
+#ifdef SONATA_BOARD_GPIOWP
+ /* Set PINMUX0 to enable GPIO4 */
+ ldr r0, _PINMUX0
+ ldr r1, GPIO4_EN_MASK
+ ldr r2, [r0]
+ and r2, r2, r1
+ str r2, [r0]
+
+ /* Enable GPIO LPSC module */
+ ldr r0, PTSTAT
+
+gpio_ptstat_loop1:
+ ldr r2, [r0]
+ tst r2, $0x00000001
+ bne gpio_ptstat_loop1
+
+ ldr r1, MDCTL_GPIO
+ ldr r2, [r1]
+ and r2, r2, $0xfffffff8
+ orr r2, r2, $0x00000003
+ str r2, [r1]
+
+ orr r2, r2, $0x00000200
+ str r2, [r1]
+
+ ldr r1, PTCMD
+ mov r2, $0x00000001
+ str r2, [r1]
+
+gpio_ptstat_loop2:
+ ldr r2, [r0]
+ tst r2, $0x00000001
+ bne gpio_ptstat_loop2
+
+ ldr r0, MDSTAT_GPIO
+gpio_mdstat_loop:
+ ldr r2, [r0]
+ and r2, r2, $0x0000001f
+ teq r2, $0x00000003
+ bne gpio_mdstat_loop
+
+ /* GPIO4 -> output */
+ ldr r0, GPIO_DIR01
+ mov r1, $0x10
+ ldr r2, [r0]
+ bic r2, r2, r0
+ str r2, [r0]
+
+ /* Set it to 0 (Write Protect) */
+ ldr r0, GPIO_CLR_DATA01
+ str r1, [r0]
+#endif
+
+ mov pc, lr
+
+#ifdef SONATA_BOARD_GPIOWP
+.ltorg
+
+GPIO4_EN_MASK:
+ .word 0xf77fffff
+MDCTL_GPIO:
+ .word 0x01c41a68
+MDSTAT_GPIO:
+ .word 0x01c41868
+GPIO_DIR01:
+ .word 0x01c67010
+GPIO_CLR_DATA01:
+ .word 0x01c6701c
+#endif