Adds coprocessor communication POST code
Signed-off-by: Anatolij Gustschin agust@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@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 $(TOPDIR)/post/rules.mk diff --git a/post/board/pdm360ng/coproc_com.c b/post/board/pdm360ng/coproc_com.c new file mode 100644 index 0000000..0755352 --- /dev/null +++ b/post/board/pdm360ng/coproc_com.c @@ -0,0 +1,97 @@ +/* + * (C) Copyright 2010 DENX Software Engineering, + * Anatolij Gustschin, agust@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * Co-Processor communication POST + */ +#include <common.h> +#include <post.h> +#include <serial.h> + +#if defined(CONFIG_SERIAL_MULTI) + +/* + * Actually the termination sequence of the coprocessor + * commands is "\r\n" (CR LF), but here we use a side effect of + * the putc() routine of the serial driver which checks for LF + * and sends CR before sending LF. Therefore the termination + * sequence in the command below is only "\n". + * "alive" string is the coprocessor response for ping command + * and not a command, therefore it is terminated with "\r\n". + */ +char alive[] = "$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);