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STM32 F401 has no CCM memory

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This commit is contained in:
Gregory Nutt 2014-04-30 16:49:39 -06:00
parent d7b261eb46
commit 42432ab1d0
2 changed files with 15 additions and 9 deletions
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8
arch/arm/src/stm32/Kconfig
View File

@ -606,11 +606,13 @@ config STM32_STM32F20XX
default n
select STM32_HAVE_OTGFS
select STM32_HAVE_FSMC
select STM32_HAVE_CCM
config STM32_STM32F30XX
bool
default n
select STM32_HAVE_USBDEV
select STM32_HAVE_CCM
config STM32_STM32F40XX
bool
@ -625,23 +627,27 @@ config STM32_STM32F405
bool
default n
select STM32_HAVE_FSMC
select STM32_HAVE_CCM
config STM32_STM32F407
bool
default n
select STM32_HAVE_FSMC
select STM32_HAVE_CCM
# This is really 427/437, but we treat the two the same.
config STM32_STM32F427
bool
default n
select STM32_HAVE_FSMC
select STM32_HAVE_CCM
# This is really 429/439, but we treat the two the same.
config STM32_STM32F429
bool
default n
select STM32_HAVE_FSMC
select STM32_HAVE_CCM
config STM32_DFU
bool "DFU bootloader"
@ -1304,8 +1310,8 @@ config ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG
config STM32_CCMEXCLUDE
bool "Exclude CCM SRAM from the heap"
depends on STM32_STM32F20XX || STM32_STM32F40XX || STM32_STM32F30XX
default y if ARCH_DMA || ELF
depends on STM32_HAVE_CCM
---help---
Exclude CCM SRAM from the HEAP because (1) it cannot be used for DMA
and (2) it appears to be impossible to execute ELF modules from CCM

16
arch/arm/src/stm32/stm32_allocateheap.c
View File

@ -63,7 +63,7 @@
* following definitions must be provided to specify the size and
* location of internal(system) SRAM:
*
* CONFIG_RAM_END : End address (+1) of SRAM (F1 family only, the
* CONFIG_RAM_END : End address (+1) of SRAM (F1 family only, the
* : F4 family uses the a priori end of SRAM)
*
* The F4 family also contains internal CCM SRAM. This SRAM is different
@ -148,12 +148,12 @@
# undef CONFIG_STM32_CCMEXCLUDE
# define CONFIG_STM32_CCMEXCLUDE 1
/* Members of teh STM32F30xxx family has a variable amount of SRAM from 24
* to 40Kb plus 8KB if CCM SRAM. No external RAM is supported (the F3 family has no
* FSMC).
/* Members of the STM32F30xxx family has a variable amount of SRAM from 24
* to 40Kb plus 8KB if CCM SRAM. No external RAM is supported (the F3 family
* has no FSMC).
*
* As a complication, CCM SRAM cannot be used for DMA. So, if STM32 DMA is enabled, CCM SRAM
* should probably be excluded from the heap.
* As a complication, CCM SRAM cannot be used for DMA. So, if STM32 DMA is
* enabled, CCM SRAM should probably be excluded from the heap.
*/
#elif defined(CONFIG_STM32_STM32F30XX)
@ -252,9 +252,9 @@
#elif defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX)
/* The STM32 F2 has no CCM SRAM */
/* The STM32 F2 and the STM32 F401 have no CCM SRAM */
# ifdef CONFIG_STM32_STM32F20XX
# if defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F401)
# undef CONFIG_STM32_CCMEXCLUDE
# define CONFIG_STM32_CCMEXCLUDE 1
# endif