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Diffstat (limited to 'platforms/chibios/eeprom_teensy.c')
-rw-r--r--platforms/chibios/eeprom_teensy.c108
1 files changed, 22 insertions, 86 deletions
diff --git a/platforms/chibios/eeprom_teensy.c b/platforms/chibios/eeprom_teensy.c
index 4aaf665269..c8777febde 100644
--- a/platforms/chibios/eeprom_teensy.c
+++ b/platforms/chibios/eeprom_teensy.c
@@ -1,6 +1,7 @@
#include <ch.h>
#include <hal.h>
+#include "eeprom_teensy.h"
#include "eeconfig.h"
/*************************************/
@@ -42,18 +43,6 @@
#if defined(K20x) /* chip selection */
/* Teensy 3.0, 3.1, 3.2; mchck; infinity keyboard */
-// The EEPROM is really RAM with a hardware-based backup system to
-// flash memory. Selecting a smaller size EEPROM allows more wear
-// leveling, for higher write endurance. If you edit this file,
-// set this to the smallest size your application can use. Also,
-// due to Freescale's implementation, writing 16 or 32 bit words
-// (aligned to 2 or 4 byte boundaries) has twice the endurance
-// compared to writing 8 bit bytes.
-//
-# ifndef EEPROM_SIZE
-# define EEPROM_SIZE 32
-# endif
-
/*
^^^ Here be dragons:
NXP AppNote AN4282 section 3.1 states that partitioning must only be done once.
@@ -71,19 +60,19 @@
// Minimum EEPROM Endurance
// ------------------------
-# if (EEPROM_SIZE == 2048) // 35000 writes/byte or 70000 writes/word
+# if (EEPROM_SIZE == 2048) // 35000 writes/byte or 70000 writes/word
# define EEESIZE 0x33
-# elif (EEPROM_SIZE == 1024) // 75000 writes/byte or 150000 writes/word
+# elif (EEPROM_SIZE == 1024) // 75000 writes/byte or 150000 writes/word
# define EEESIZE 0x34
-# elif (EEPROM_SIZE == 512) // 155000 writes/byte or 310000 writes/word
+# elif (EEPROM_SIZE == 512) // 155000 writes/byte or 310000 writes/word
# define EEESIZE 0x35
-# elif (EEPROM_SIZE == 256) // 315000 writes/byte or 630000 writes/word
+# elif (EEPROM_SIZE == 256) // 315000 writes/byte or 630000 writes/word
# define EEESIZE 0x36
-# elif (EEPROM_SIZE == 128) // 635000 writes/byte or 1270000 writes/word
+# elif (EEPROM_SIZE == 128) // 635000 writes/byte or 1270000 writes/word
# define EEESIZE 0x37
-# elif (EEPROM_SIZE == 64) // 1275000 writes/byte or 2550000 writes/word
+# elif (EEPROM_SIZE == 64) // 1275000 writes/byte or 2550000 writes/word
# define EEESIZE 0x38
-# elif (EEPROM_SIZE == 32) // 2555000 writes/byte or 5110000 writes/word
+# elif (EEPROM_SIZE == 32) // 2555000 writes/byte or 5110000 writes/word
# define EEESIZE 0x39
# endif
@@ -99,9 +88,9 @@ void eeprom_initialize(void) {
if (FTFL->FCNFG & FTFL_FCNFG_RAMRDY) {
// FlexRAM is configured as traditional RAM
// We need to reconfigure for EEPROM usage
- FTFL->FCCOB0 = 0x80; // PGMPART = Program Partition Command
- FTFL->FCCOB4 = EEESIZE; // EEPROM Size
- FTFL->FCCOB5 = 0x03; // 0K for Dataflash, 32K for EEPROM backup
+ FTFL->FCCOB0 = 0x80; // PGMPART = Program Partition Command
+ FTFL->FCCOB4 = EEESIZE; // EEPROM Size
+ FTFL->FCCOB5 = 0x03; // 0K for Dataflash, 32K for EEPROM backup
__disable_irq();
// do_flash_cmd() must execute from RAM. Luckily the C syntax is simple...
(*((void (*)(volatile uint8_t *))((uint32_t)do_flash_cmd | 1)))(&(FTFL->FSTAT));
@@ -109,7 +98,7 @@ void eeprom_initialize(void) {
status = FTFL->FSTAT;
if (status & (FTFL_FSTAT_RDCOLERR | FTFL_FSTAT_ACCERR | FTFL_FSTAT_FPVIOL)) {
FTFL->FSTAT = (status & (FTFL_FSTAT_RDCOLERR | FTFL_FSTAT_ACCERR | FTFL_FSTAT_FPVIOL));
- return; // error
+ return; // error
}
}
// wait for eeprom to become ready (is this really necessary?)
@@ -173,7 +162,9 @@ void eeprom_read_block(void *buf, const void *addr, uint32_t len) {
*
* FIXME: needs doc
*/
-int eeprom_is_ready(void) { return (FTFL->FCNFG & FTFL_FCNFG_EEERDY) ? 1 : 0; }
+int eeprom_is_ready(void) {
+ return (FTFL->FCNFG & FTFL_FCNFG_EEERDY) ? 1 : 0;
+}
/** \brief flexram wait
*
@@ -350,8 +341,6 @@ void do_flash_cmd(volatile uint8_t *fstat)
extern uint32_t __eeprom_workarea_start__;
extern uint32_t __eeprom_workarea_end__;
-# define EEPROM_SIZE 128
-
static uint32_t flashend = 0;
void eeprom_initialize(void) {
@@ -499,7 +488,9 @@ void eeprom_read_block(void *buf, const void *addr, uint32_t len) {
}
}
-int eeprom_is_ready(void) { return 1; }
+int eeprom_is_ready(void) {
+ return 1;
+}
void eeprom_write_word(uint16_t *addr, uint16_t value) {
uint8_t *p = (uint8_t *)addr;
@@ -524,68 +515,13 @@ void eeprom_write_block(const void *buf, void *addr, uint32_t len) {
}
#else
-// No EEPROM supported, so emulate it
-
-# ifndef EEPROM_SIZE
-# include "eeconfig.h"
-# define EEPROM_SIZE (((EECONFIG_SIZE + 3) / 4) * 4) // based off eeconfig's current usage, aligned to 4-byte sizes, to deal with LTO
-# endif
-__attribute__((aligned(4))) static uint8_t buffer[EEPROM_SIZE];
-
-uint8_t eeprom_read_byte(const uint8_t *addr) {
- uint32_t offset = (uint32_t)addr;
- return buffer[offset];
-}
-
-void eeprom_write_byte(uint8_t *addr, uint8_t value) {
- uint32_t offset = (uint32_t)addr;
- buffer[offset] = value;
-}
-
-uint16_t eeprom_read_word(const uint16_t *addr) {
- const uint8_t *p = (const uint8_t *)addr;
- return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8);
-}
-
-uint32_t eeprom_read_dword(const uint32_t *addr) {
- const uint8_t *p = (const uint8_t *)addr;
- return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8) | (eeprom_read_byte(p + 2) << 16) | (eeprom_read_byte(p + 3) << 24);
-}
-
-void eeprom_read_block(void *buf, const void *addr, size_t len) {
- const uint8_t *p = (const uint8_t *)addr;
- uint8_t * dest = (uint8_t *)buf;
- while (len--) {
- *dest++ = eeprom_read_byte(p++);
- }
-}
-
-void eeprom_write_word(uint16_t *addr, uint16_t value) {
- uint8_t *p = (uint8_t *)addr;
- eeprom_write_byte(p++, value);
- eeprom_write_byte(p, value >> 8);
-}
-
-void eeprom_write_dword(uint32_t *addr, uint32_t value) {
- uint8_t *p = (uint8_t *)addr;
- eeprom_write_byte(p++, value);
- eeprom_write_byte(p++, value >> 8);
- eeprom_write_byte(p++, value >> 16);
- eeprom_write_byte(p, value >> 24);
-}
-
-void eeprom_write_block(const void *buf, void *addr, size_t len) {
- uint8_t * p = (uint8_t *)addr;
- const uint8_t *src = (const uint8_t *)buf;
- while (len--) {
- eeprom_write_byte(p++, *src++);
- }
-}
-
+# error Unsupported Teensy EEPROM.
#endif /* chip selection */
// The update functions just calls write for now, but could probably be optimized
-void eeprom_update_byte(uint8_t *addr, uint8_t value) { eeprom_write_byte(addr, value); }
+void eeprom_update_byte(uint8_t *addr, uint8_t value) {
+ eeprom_write_byte(addr, value);
+}
void eeprom_update_word(uint16_t *addr, uint16_t value) {
uint8_t *p = (uint8_t *)addr;
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-23 20:23:52 +0000