altos/stm: Figure out available flash space based on chip id registers

[fw/altos] / src / stm / ao_interrupt.c

diff --git a/src/stm/ao_interrupt.c b/src/stm/ao_interrupt.c
index 969e6a0f7b6a23a7433785f114c76765005509bb..56cce0c02ff90af23fac42ee05af44783b59626c 100644 (file)
--- a/src/stm/ao_interrupt.c
+++ b/src/stm/ao_interrupt.c
@@ -39,6 +39,38 @@ void stm_ignore_isr(void)
 
 const void *stm_interrupt_vector[];
 
 
 const void *stm_interrupt_vector[];
 

+uint32_t
+stm_flash_size(void) {
+       uint16_t        dev_id = stm_dev_id();
+       uint16_t        kbytes = 0;
+
+       switch (dev_id) {
+       case 0x416:     /* cat 1 */
+               kbytes = stm_flash_size_medium.f_size;
+               break;
+       case 0x429:     /* cat 2 */
+               kbytes = stm_flash_size_medium.f_size & 0xff;
+               break;
+       case 0x427:     /* cat 3 */
+               kbytes = stm_flash_size_large.f_size;
+               break;
+       case 0x436:     /* cat 4 */
+               switch (stm_flash_size_large.f_size) {
+               case 0:
+                       kbytes = 256;
+                       break;
+               case 1:
+                       kbytes = 384;
+                       break;
+               }
+               break;
+       case 0x437:     /* cat 5 */
+               kbytes = stm_flash_size_large.f_size;
+               break;
+       }
+       return (uint32_t) kbytes * 1024;
+}
+

 void start(void)
 {
 #ifdef AO_BOOT_CHAIN
 void start(void)
 {
 #ifdef AO_BOOT_CHAIN