[U-Boot] [PATCH v4 8/8] mpc5121: pdm360ng: add coprocessor POST
Anatolij Gustschin
agust at denx.de
Sat Apr 24 19:27:11 CEST 2010
Adds coprocessor communication POST code
Signed-off-by: Anatolij Gustschin <agust at denx.de>
---
v3 -> v4:
- use more generic name for coprocessor POST function
- move the POST code to board specific post/board/pdm360ng/
directory
include/configs/pdm360ng.h | 5 ++
include/post.h | 1 +
post/board/pdm360ng/Makefile | 29 +++++++++++
post/board/pdm360ng/coproc_com.c | 97 ++++++++++++++++++++++++++++++++++++++
post/tests.c | 13 +++++
5 files changed, 145 insertions(+), 0 deletions(-)
create mode 100644 post/board/pdm360ng/Makefile
create mode 100644 post/board/pdm360ng/coproc_com.c
diff --git a/include/configs/pdm360ng.h b/include/configs/pdm360ng.h
index 228a686..718abdf 100644
--- a/include/configs/pdm360ng.h
+++ b/include/configs/pdm360ng.h
@@ -445,6 +445,11 @@
#define CONFIG_KGDB_SER_INDEX 2 /* which serial port to use */
#endif
+#ifdef CONFIG_SERIAL_MULTI
+/* POST support */
+#define CONFIG_POST (CONFIG_SYS_POST_COPROC)
+#endif
+
/*
* Environment Configuration
*/
diff --git a/include/post.h b/include/post.h
index ff83bce..3da959d 100644
--- a/include/post.h
+++ b/include/post.h
@@ -124,6 +124,7 @@ extern int post_hotkeys_pressed(void);
#define CONFIG_SYS_POST_BSPEC4 0x00080000
#define CONFIG_SYS_POST_BSPEC5 0x00100000
#define CONFIG_SYS_POST_CODEC 0x00200000
+#define CONFIG_SYS_POST_COPROC 0x00400000
#endif /* CONFIG_POST */
diff --git a/post/board/pdm360ng/Makefile b/post/board/pdm360ng/Makefile
new file mode 100644
index 0000000..d1538f6
--- /dev/null
+++ b/post/board/pdm360ng/Makefile
@@ -0,0 +1,29 @@
+#
+# (C) Copyright 2010 DENX Software Engineering
+# Anatolij Gustschin, agust at denx.de.
+#
+# 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 $(OBJTREE)/include/autoconf.mk
+
+LIB = libpostpdm360ng.a
+
+COBJS-$(CONFIG_HAS_POST) += coproc_com.o
+
+include $(TOPDIR)/post/rules.mk
diff --git a/post/board/pdm360ng/coproc_com.c b/post/board/pdm360ng/coproc_com.c
new file mode 100644
index 0000000..0755352
--- /dev/null
+++ b/post/board/pdm360ng/coproc_com.c
@@ -0,0 +1,97 @@
+/*
+ * (C) Copyright 2010 DENX Software Engineering,
+ * Anatolij Gustschin, agust at denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Co-Processor communication POST
+ */
+#include <common.h>
+#include <post.h>
+#include <serial.h>
+
+#if defined(CONFIG_SERIAL_MULTI)
+
+/*
+ * Actually the termination sequence of the coprocessor
+ * commands is "\r\n" (CR LF), but here we use a side effect of
+ * the putc() routine of the serial driver which checks for LF
+ * and sends CR before sending LF. Therefore the termination
+ * sequence in the command below is only "\n".
+ * "alive" string is the coprocessor response for ping command
+ * and not a command, therefore it is terminated with "\r\n".
+ */
+char alive[] = "$AL;38\r\n";
+char ping[] = "$PI;2C\n";
+
+int coprocessor_post_test(int flags)
+{
+ struct stdio_dev *cop_port;
+ int ret;
+ char buf[10];
+
+ /* Test IO Coprocessor communication */
+ cop_port = open_port(4, CONFIG_SYS_PDM360NG_COPROC_BAUDRATE);
+ if (!cop_port)
+ return -1;
+
+ write_port(cop_port, ping);
+ udelay(CONFIG_SYS_PDM360NG_COPROC_READ_DELAY);
+
+ memset(buf, 0, sizeof(buf));
+ ret = read_port(cop_port, buf, sizeof(buf));
+ close_port(4);
+ if (ret <= 0) {
+ post_log("Error: Can't read IO Coprocessor port.\n");
+ return -1;
+ }
+
+ if (strcmp(buf, alive)) {
+ post_log("Error: IO-Cop. resp.: %s\n", buf);
+ return -1;
+ }
+
+ /* Test WD Coprocessor communication */
+ cop_port = open_port(1, CONFIG_SYS_PDM360NG_COPROC_BAUDRATE);
+ if (!cop_port) {
+ post_log("Error: Can't open WD Coprocessor port.\n");
+ return -1;
+ }
+
+ write_port(cop_port, ping);
+ udelay(CONFIG_SYS_PDM360NG_COPROC_READ_DELAY);
+
+ memset(buf, 0, sizeof(buf));
+ ret = read_port(cop_port, buf, sizeof(buf));
+ close_port(1);
+ if (ret <= 0) {
+ post_log("Error: Can't read WD Coprocessor port.\n");
+ return -1;
+ }
+
+ if (strcmp(buf, alive)) {
+ post_log("Error: WD-Cop. resp.: %s\n", buf);
+ return -1;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_SERIAL_MULTI */
diff --git a/post/tests.c b/post/tests.c
index 3224f00..a4066f9 100644
--- a/post/tests.c
+++ b/post/tests.c
@@ -53,6 +53,7 @@ extern int gdc_post_test (int flags);
extern int fpga_post_test (int flags);
extern int lwmon5_watchdog_post_test(int flags);
extern int sysmon1_post_test(int flags);
+extern int coprocessor_post_test(int flags);
extern int sysmon_init_f (void);
@@ -286,6 +287,18 @@ struct post_test post_list[] =
#if CONFIG_POST & CONFIG_SYS_POST_BSPEC5
CONFIG_POST_BSPEC5,
#endif
+#if CONFIG_POST & CONFIG_SYS_POST_COPROC
+ {
+ "Coprocessors communication test",
+ "coproc_com",
+ "This test checks communication with coprocessors.",
+ POST_RAM | POST_ALWAYS | POST_CRITICAL,
+ &coprocessor_post_test,
+ NULL,
+ NULL,
+ CONFIG_SYS_POST_COPROC
+ }
+#endif
};
unsigned int post_list_size = sizeof (post_list) / sizeof (struct post_test);
--
1.6.3.3
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