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authorNicolas Schodet2015-10-26 14:00:04 +0100
committerNicolas Schodet2019-10-07 00:44:50 +0200
commit653106ca9ba17bee5996cccd41bb8e56ce5e4c71 (patch)
tree21fdbacbac93fa33496cde76b11eb4750bb04705 /ucoo
parenta3ad7336b71c74f22a40ad8bb11fc96b99431672 (diff)
ucoo/hal/self_programming: add flash self programming module
Diffstat (limited to 'ucoo')
-rw-r--r--ucoo/hal/self_programming/Module1
-rw-r--r--ucoo/hal/self_programming/self_programming.hh40
-rw-r--r--ucoo/hal/self_programming/self_programming.stm32f4.cc83
3 files changed, 124 insertions, 0 deletions
diff --git a/ucoo/hal/self_programming/Module b/ucoo/hal/self_programming/Module
new file mode 100644
index 0000000..7b59d98
--- /dev/null
+++ b/ucoo/hal/self_programming/Module
@@ -0,0 +1 @@
+ucoo_hal_self_programming_SOURCES := self_programming.stm32f4.cc
diff --git a/ucoo/hal/self_programming/self_programming.hh b/ucoo/hal/self_programming/self_programming.hh
new file mode 100644
index 0000000..8964fb8
--- /dev/null
+++ b/ucoo/hal/self_programming/self_programming.hh
@@ -0,0 +1,40 @@
+#ifndef ucoo_hal_self_programming_self_programming_hh
+#define ucoo_hal_self_programming_self_programming_hh
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2015 Nicolas Schodet
+//
+// 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.
+//
+// }}}
+#include "ucoo/common.hh"
+
+namespace ucoo {
+
+/// Erase flash, must be aligned on erase size.
+void
+self_programming_erase (uint32_t addr, int count);
+
+/// Program flash, must be aligned on words.
+void
+self_programming_write (uint32_t addr, const char *buf, int count);
+
+} // namespace ucoo
+
+#endif // ucoo_hal_self_programming_self_programming_hh
diff --git a/ucoo/hal/self_programming/self_programming.stm32f4.cc b/ucoo/hal/self_programming/self_programming.stm32f4.cc
new file mode 100644
index 0000000..9d8aa56
--- /dev/null
+++ b/ucoo/hal/self_programming/self_programming.stm32f4.cc
@@ -0,0 +1,83 @@
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2015 Nicolas Schodet
+//
+// 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.
+//
+// }}}
+#include "ucoo/hal/self_programming/self_programming.hh"
+
+#include <libopencm3/stm32/flash.h>
+#include <libopencm3/stm32/desig.h>
+
+namespace ucoo {
+
+static const uint32_t sector_addr[] = {
+ // 16 KB
+ 0x8000000, 0x8004000, 0x8008000, 0x800c000,
+ // 64 KB
+ 0x8010000,
+ // 128 KB.
+ 0x8020000, 0x8040000, 0x8060000, 0x8080000, 0x80a0000, 0x80c0000,
+ 0x80e0000, 0x8100000,
+ // For two banks devices only:
+ // 16 KB
+ 0x8100000, 0x8104000, 0x8108000, 0x810c000,
+ // 64 KB
+ 0x8110000,
+ // 128 KB.
+ 0x8120000, 0x8140000, 0x8160000, 0x8180000, 0x81a0000, 0x81c0000,
+ 0x81e0000, 0x8200000,
+};
+
+void
+self_programming_erase (uint32_t addr, int count)
+{
+ assert (addr - sector_addr[0] + count <= DESIG_FLASH_SIZE * 1024);
+ int sector;
+ for (sector = 0; count && sector < lengthof (sector_addr); sector++)
+ {
+ if (addr == sector_addr[sector])
+ {
+ flash_unlock ();
+ flash_erase_sector (sector, FLASH_CR_PROGRAM_X32);
+ flash_lock ();
+ int sector_size = sector_addr[sector + 1] - addr;
+ addr += sector_size;
+ count -= sector_size;
+ }
+ }
+ assert (count == 0);
+}
+
+void
+self_programming_write (uint32_t addr, const char *buf, int count)
+{
+ assert (addr % 4 == 0);
+ assert (reinterpret_cast<int> (buf) % 4 == 0);
+ assert (count % 4 == 0);
+ assert (addr - sector_addr[0] + count <= DESIG_FLASH_SIZE * 1024);
+ flash_unlock ();
+ for (int i = 0; i < count; i += 4)
+ flash_program_word (addr + i,
+ *reinterpret_cast<const uint32_t *> (buf + i));
+ flash_lock ();
+}
+
+} // namespace ucoo