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Diffstat (limited to 'src/platforms/stm32/dfu_f4.c')
-rw-r--r--src/platforms/stm32/dfu_f4.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/src/platforms/stm32/dfu_f4.c b/src/platforms/stm32/dfu_f4.c
new file mode 100644
index 0000000..25c4a0f
--- /dev/null
+++ b/src/platforms/stm32/dfu_f4.c
@@ -0,0 +1,103 @@
+/*
+ * This file is part of the Black Magic Debug project.
+ *
+ * Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(STM32F2)
+# include <libopencm3/stm32/f2/flash.h>
+#elif defined(STM32F4)
+# include <libopencm3/stm32/f4/flash.h>
+#endif
+
+#include "usbdfu.h"
+
+static u32 sector_addr[] = {0x8000000, 0x8004000, 0x8008000, 0x800c000,
+ 0x8010000, 0x8020000, 0x8040000, 0x8060000,
+ 0x8080000, 0x80a0000, 0x80c0000, 0x80e0000,
+ 0x8100000, 0};
+static u16 sector_erase_time[12]= {500, 500, 500, 500,
+ 1100,
+ 2600, 2600, 2600, 2600, 2600, 2600, 2600};
+static u8 sector_num = 0xff;
+
+/* Find the sector number for a given address*/
+static void get_sector_num(u32 addr)
+{
+ int i = 0;
+ while(sector_addr[i+1]) {
+ if (addr < sector_addr[i+1])
+ break;
+ i++;
+ }
+ if (!sector_addr[i])
+ return;
+ sector_num = i;
+}
+
+void dfu_check_and_do_sector_erase(uint32_t addr)
+{
+ if(addr == sector_addr[sector_num]) {
+ flash_erase_sector((sector_num & 0x1f)<<3, FLASH_PROGRAM_X32);
+ }
+}
+
+void dfu_flash_program_buffer(uint32_t baseaddr, void *buf, int len)
+{
+ for(int i = 0; i < len; i += 4)
+ flash_program_word(baseaddr + i,
+ *(u32*)(buf+i),
+ FLASH_PROGRAM_X32);
+}
+
+uint32_t dfu_poll_timeout(uint8_t cmd, uint32_t addr, uint16_t blocknum)
+{
+ /* Erase for big pages on STM2/4 needs "long" time
+ Try not to hit USB timeouts*/
+ if ((blocknum == 0) && (cmd == CMD_ERASE)) {
+ get_sector_num(addr);
+ if(addr == sector_addr[sector_num])
+ return sector_erase_time[sector_num];
+ }
+
+ /* Programming 256 word with 100 us(max) per word*/
+ return 26;
+}
+
+void dfu_protect_enable(void)
+{
+ if ((FLASH_OPTCR & 0x10000) != 0) {
+ flash_program_option_bytes(FLASH_OPTCR & ~0x10000);
+ flash_lock_option_bytes();
+ }
+}
+
+void dfu_jump_app_if_valid(void)
+{
+ /* Boot the application if it's valid */
+ /* Vector table may be anywhere in 128 kByte RAM
+ CCM not handled*/
+ if((*(volatile u32*)APP_ADDRESS & 0x2FFC0000) == 0x20000000) {
+ /* Set vector table base address */
+ SCB_VTOR = APP_ADDRESS & 0x1FFFFF; /* Max 2 MByte Flash*/
+ /* Initialise master stack pointer */
+ asm volatile ("msr msp, %0"::"g"
+ (*(volatile u32*)APP_ADDRESS));
+ /* Jump to application */
+ (*(void(**)())(APP_ADDRESS + 4))();
+ }
+}
+