[UNTESTED] Resurrect FSMC support.

fsmc_sram_init_gpios() is now series-specific, so move its existing
implementation to the F1 backend, and add libmaple/stm32f2/fsmc.c for
the F2 backend.

Delete libmaple/fsmc.c; it is now empty.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

2 files changed, 96 insertions, 0 deletions

diff --git a/libmaple/stm32f1/fsmc.c b/libmaple/stm32f1/fsmc.c
new file mode 100644
index 0000000..8e01b5e
--- /dev/null
+++ b/libmaple/stm32f1/fsmc.c
@@ -0,0 +1,95 @@
+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2012 LeafLabs, LLC.
+ * Copyright (c) 2010 Bryan Newbold.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *****************************************************************************/
+
+/**
+ * @file stm32f1/fsmc.c
+ * @author Marti Bolivar <mbolivar@leaflabs.com>,
+ *         Bryan Newbold <bnewbold@robocracy.org>
+ * @brief STM32F1 FSMC support.
+ */
+
+#include <libmaple/stm32.h>
+
+#if STM32_HAVE_FSMC /* Don't try building the rest for MCUs without FSMC */
+
+#include <libmaple/fsmc.h>
+#include <libmaple/gpio.h>
+
+void fsmc_sram_init_gpios(void) {
+    /* Data lines... */
+    gpio_set_mode(GPIOD,  0, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD,  1, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD,  8, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD,  9, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD, 10, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD, 14, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD, 15, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE,  7, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE,  8, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE,  9, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE, 10, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE, 11, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE, 12, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE, 13, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE, 14, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOE, 15, GPIO_AF_OUTPUT_PP);
+
+    /* Address lines... */
+    gpio_set_mode(GPIOD, 11, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD, 12, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOD, 13, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF,  0, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF,  1, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF,  2, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF,  3, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF,  4, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF,  5, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF, 12, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF, 13, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF, 14, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOF, 15, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOG,  0, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOG,  1, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOG,  2, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOG,  3, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOG,  4, GPIO_AF_OUTPUT_PP);
+    gpio_set_mode(GPIOG,  5, GPIO_AF_OUTPUT_PP);
+
+    /* And control lines... */
+    gpio_set_mode(GPIOD,  4, GPIO_AF_OUTPUT_PP);   // NOE
+    gpio_set_mode(GPIOD,  5, GPIO_AF_OUTPUT_PP);   // NWE
+
+    gpio_set_mode(GPIOD,  7, GPIO_AF_OUTPUT_PP);   // NE1
+    gpio_set_mode(GPIOG,  9, GPIO_AF_OUTPUT_PP);   // NE2
+    gpio_set_mode(GPIOG, 10, GPIO_AF_OUTPUT_PP);   // NE3
+    gpio_set_mode(GPIOG, 12, GPIO_AF_OUTPUT_PP);   // NE4
+
+    gpio_set_mode(GPIOE,  0, GPIO_AF_OUTPUT_PP);   // NBL0
+    gpio_set_mode(GPIOE,  1, GPIO_AF_OUTPUT_PP);   // NBL1
+}
+
+#endif  /* STM32_HAVE_FSMC */
diff --git a/libmaple/stm32f1/rules.mk b/libmaple/stm32f1/rules.mk
index 3d34797..b961d77 100644
--- a/libmaple/stm32f1/rules.mk
+++ b/libmaple/stm32f1/rules.mk
@@ -12,6 +12,7 @@ sSRCS_$(d) := isrs_performance.S            \
               vector_table_performance.S
 
 cSRCS_$(d) := rcc.c
+cSRCS_$(d) += fsmc.c
 cSRCS_$(d) += gpio.c
 cSRCS_$(d) += bkp.c
 cSRCS_$(d) += usart.c