From b5a8e0386d5134839bf23e82110d2f1926201202 Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Fri, 27 Jan 2012 21:01:59 -0500 Subject: Clean up Flash interface; add flash_enable_features(). Make a single function, flash_enable_features(), to control the access characteristics of Flash memory (i.e. to write to the non-latency bits of ACR). In so doing, make everybody pretend to allow instruction and data caching. On STM32F1, trying to turn these on simply has no effect. This allows unconditionally trying to turn them on, which will simplify users' lives. This has the ancillary benefit of making the stm32f2- and stm32f1-specific flash.c files unnecessary; delete these. Signed-off-by: Marti Bolivar --- libmaple/stm32f2/include/series/flash.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'libmaple/stm32f2/include/series') diff --git a/libmaple/stm32f2/include/series/flash.h b/libmaple/stm32f2/include/series/flash.h index 73cbe14..f48eea3 100644 --- a/libmaple/stm32f2/include/series/flash.h +++ b/libmaple/stm32f2/include/series/flash.h @@ -189,6 +189,13 @@ typedef struct flash_reg_map { /* Note that this value depends on a 2.7V--3.6V supply voltage */ #define FLASH_SAFE_WAIT_STATES FLASH_WAIT_STATE_3 +/* Flash memory features available via ACR. */ +enum { + FLASH_PREFETCH = 0x100, + FLASH_ICACHE = 0x200, + FLASH_DCACHE = 0x400, +}; + #ifdef __cplusplus } #endif -- cgit v1.2.3