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Fix much replicated typo. STM32 F4 SRAM is CCM, not TCM 

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4571 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo 2012-04-07 20:54:45 +00:00
parent 1e3ef5cbe7
commit 4205d70cc8
25 changed files with 94 additions and 94 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
nuttx/arch/arm/src/stm32/chip/stm32f20xxx_memorymap.h
View File

@ -57,7 +57,7 @@
/* 0x00100000-0x07ffffff: Reserved */
#define STM32_FLASH_BASE 0x08000000 /* 0x08000000-0x080fffff: FLASH memory */
/* 0x08100000-0x0fffffff: Reserved */
#define STM32_TCMRAM_BASE 0x10000000 /* 0x10000000-0x1000ffff: 64Kb TCM data RAM */
#define STM32_CCMRAM_BASE 0x10000000 /* 0x10000000-0x1000ffff: 64Kb CCM data RAM */
/* 0x10010000-0x1ffeffff: Reserved */
#define STM32_SYSMEM_BASE 0x1fff0000 /* 0x1fff0000-0x1fff7a0f: System memory */
/* 0x1fff7a10-0x1fff7fff: Reserved */

2
nuttx/arch/arm/src/stm32/chip/stm32f40xxx_memorymap.h
View File

@ -57,7 +57,7 @@
/* 0x00100000-0x07ffffff: Reserved */
#define STM32_FLASH_BASE 0x08000000 /* 0x08000000-0x080fffff: FLASH memory */
/* 0x08100000-0x0fffffff: Reserved */
#define STM32_TCMRAM_BASE 0x10000000 /* 0x10000000-0x1000ffff: 64Kb TCM data RAM */
#define STM32_CCMRAM_BASE 0x10000000 /* 0x10000000-0x1000ffff: 64Kb CCM data RAM */
/* 0x10010000-0x1ffeffff: Reserved */
#define STM32_SYSMEM_BASE 0x1fff0000 /* 0x1fff0000-0x1fff7a0f: System memory */
/* 0x1fff7a10-0x1fff7fff: Reserved */

72
nuttx/arch/arm/src/stm32/stm32_allocateheap.c
View File

@ -61,11 +61,11 @@
* CONFIG_DRAM_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 TCM SRAM. This SRAM is different
* The F4 family also contains internal CCM SRAM. This SRAM is different
* because it cannot be used for DMA. So if DMA needed, then the following
* should be defined to exclude TCM SRAM from the heap:
* should be defined to exclude CCM SRAM from the heap:
*
* CONFIG_STM32_TCMEXCLUDE : Exclude TCM SRAM from the HEAP
* CONFIG_STM32_CCMEXCLUDE : Exclude CCM SRAM from the HEAP
*
* In addition to internal SRAM, SRAM may also be available through the FSMC.
* In order to use FSMC SRAM, the following additional things need to be
@ -112,24 +112,24 @@
# error "CONFIG_MM_REGIONS > 1 but I don't know what the other region(s) are"
# endif
/* The STM32 F1 has not TCM SRAM */
/* The STM32 F1 has not CCM SRAM */
# undef CONFIG_STM32_TCMEXCLUDE
# define CONFIG_STM32_TCMEXCLUDE 1
# undef CONFIG_STM32_CCMEXCLUDE
# define CONFIG_STM32_CCMEXCLUDE 1
/* All members of the STM32F20xxx and STM32F40xxx families have 192Kb in three banks:
*
* 1) 112Kb of System SRAM beginning at address 0x2000:0000
* 2) 16Kb of System SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* As determined by ld.script, g_heapbase lies in the 112Kb memory
* region and that extends to 0x2001:0000. But the first and second memory
* regions are contiguous and treated as one in this logic that extends to
* 0x2002:0000.
*
* As a complication, it appears that TCM SRAM cannot be used for DMA. So, if
* STM32 DMA is enabled, TCM SRAM should probably be excluded from the heap.
* As a complication, it appears that CCM SRAM cannot be used for DMA. So, if
* STM32 DMA is enabled, CCM SRAM should probably be excluded from the heap.
*
* In addition, external FSMC SRAM may be available.
*/
@ -140,7 +140,7 @@
# define SRAM1_END 0x20020000
/* Set the range of TCM SRAM as well (although we may not use it) */
/* Set the range of CCM SRAM as well (although we may not use it) */
# define SRAM2_START 0x10000000
# define SRAM2_END 0x10010000
@ -150,19 +150,19 @@
* Configuration 1. System SRAM (only)
* CONFIG_MM_REGIONS == 1
* CONFIG_STM32_FSMC_SRAM NOT defined
* CONFIG_STM32_TCMEXCLUDE defined
* Configuration 2. System SRAM and TCM SRAM
* CONFIG_STM32_CCMEXCLUDE defined
* Configuration 2. System SRAM and CCM SRAM
* CONFIG_MM_REGIONS == 2
* CONFIG_STM32_FSMC_SRAM NOT defined
* CONFIG_STM32_TCMEXCLUDE NOT defined
* CONFIG_STM32_CCMEXCLUDE NOT defined
* Configuration 3. System SRAM and FSMC SRAM
* CONFIG_MM_REGIONS == 2
* CONFIG_STM32_FSMC_SRAM defined
* CONFIG_STM32_TCMEXCLUDE defined
* Configuration 4. System SRAM, TCM SRAM, and FSMC SRAM
* CONFIG_STM32_CCMEXCLUDE defined
* Configuration 4. System SRAM, CCM SRAM, and FSMC SRAM
* CONFIG_MM_REGIONS == 3
* CONFIG_STM32_FSMC_SRAM defined
* CONFIG_STM32_TCMEXCLUDE NOT defined
* CONFIG_STM32_CCMEXCLUDE NOT defined
*
* Let's make sure that all definitions are consitent before doing
* anything else
@ -177,20 +177,20 @@
# if CONFIG_MM_REGIONS < 2
/* Only one memory region. Force Configuration 1 */
# warning "FSMC SRAM (and TCM SRAM) excluded from the heap"
# warning "FSMC SRAM (and CCM SRAM) excluded from the heap"
# undef CONFIG_STM32_FSMC_SRAM
# undef CONFIG_STM32_TCMEXCLUDE
# define CONFIG_STM32_TCMEXCLUDE 1
# undef CONFIG_STM32_CCMEXCLUDE
# define CONFIG_STM32_CCMEXCLUDE 1
/* CONFIG_MM_REGIONS may be 3 if TCM SRAM is included in the head */
/* CONFIG_MM_REGIONS may be 3 if CCM SRAM is included in the head */
# elif CONFIG_MM_REGIONS > 2
/* More than two memory regions. This is okay if TCM SRAM is not
/* More than two memory regions. This is okay if CCM SRAM is not
* disabled.
*/
# if defined(CONFIG_STM32_TCMEXCLUDE)
# if defined(CONFIG_STM32_CCMEXCLUDE)
/* Configuration 3: CONFIG_MM_REGIONS should have been 2 */
@ -204,7 +204,7 @@
*/
# ifdef (CONFIG_STM32_DMA)
# warning "TCM SRAM is included in the heap AND DMA is enabled"
# warning "CCM SRAM is included in the heap AND DMA is enabled"
# endif
# if CONFIG_MM_REGIONS != 3
# error "CONFIG_MM_REGIONS > 3 but I don't know what some of the region(s) are"
@ -213,29 +213,29 @@
# endif
# endif
/* CONFIG_MM_REGIONS is exactly 2. We cannot support both TCM SRAM and
/* CONFIG_MM_REGIONS is exactly 2. We cannot support both CCM SRAM and
* FSMC SRAM.
*/
# elif !defined(CONFIG_STM32_TCMEXCLUDE)
# error "CONFIG_MM_REGIONS == 2, cannot support both TCM SRAM and FSMC SRAM"
# undef CONFIG_STM32_TCMEXCLUDE
# define CONFIG_STM32_TCMEXCLUDE 1
# elif !defined(CONFIG_STM32_CCMEXCLUDE)
# error "CONFIG_MM_REGIONS == 2, cannot support both CCM SRAM and FSMC SRAM"
# undef CONFIG_STM32_CCMEXCLUDE
# define CONFIG_STM32_CCMEXCLUDE 1
# endif
# elif !defined(CONFIG_STM32_TCMEXCLUDE)
# elif !defined(CONFIG_STM32_CCMEXCLUDE)
/* Configuration 2: FSMC SRAM is not used, but TCM SRAM is requested. DMA
/* Configuration 2: FSMC SRAM is not used, but CCM SRAM is requested. DMA
* should be disabled and CONFIG_MM_REGIONS should be 2.
*/
# ifdef CONFIG_STM32_DMA
# warning "TCM SRAM is included in the heap AND DMA is enabled"
# warning "CCM SRAM is included in the heap AND DMA is enabled"
# endif
# if CONFIG_MM_REGIONS < 2
# error "TCM SRAM excluded from the heap because CONFIG_MM_REGIONS < 2"
# undef CONFIG_STM32_TCMEXCLUDE
# define CONFIG_STM32_TCMEXCLUDE 1
# error "CCM SRAM excluded from the heap because CONFIG_MM_REGIONS < 2"
# undef CONFIG_STM32_CCMEXCLUDE
# define CONFIG_STM32_CCMEXCLUDE 1
# elif CONFIG_MM_REGIONS > 2
# error "CONFIG_MM_REGIONS > 2 but I don't know what some of the region(s) are"
# undef CONFIG_MM_REGIONS
@ -300,9 +300,9 @@ void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
#if CONFIG_MM_REGIONS > 1
void up_addregion(void)
{
/* Add the STM32F20xxx/STM32F40xxx TCM SRAM heap region. */
/* Add the STM32F20xxx/STM32F40xxx CCM SRAM heap region. */
#ifndef CONFIG_STM32_TCMEXCLUDE
#ifndef CONFIG_STM32_CCMEXCLUDE
mm_addregion((FAR void*)SRAM2_START, SRAM2_END-SRAM2_START);
#endif

2
nuttx/configs/stm3220g-eval/dhcpd/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

2
nuttx/configs/stm3220g-eval/nettest/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

2
nuttx/configs/stm3220g-eval/nsh/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

2
nuttx/configs/stm3220g-eval/nsh2/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

2
nuttx/configs/stm3220g-eval/ostest/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

2
nuttx/configs/stm3220g-eval/telnetd/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

26
nuttx/configs/stm3240g-eval/README.txt
View File

@ -456,11 +456,11 @@ The on-board SRAM can be configured by setting
Configuration Options
---------------------
Internal SRAM is available in all members of the STM32 family. The F4 family
also contains internal TCM SRAM. This SRAM is different because it cannot
also contains internal CCM SRAM. This SRAM is different because it cannot
be used for DMA. So if DMA needed, then the following should be defined
to exclude TCM SRAM from the heap:
to exclude CCM SRAM from the heap:
CONFIG_STM32_TCMEXCLUDE : Exclude TCM SRAM from the HEAP
CONFIG_STM32_CCMEXCLUDE : Exclude CCM SRAM from the HEAP
In addition to internal SRAM, SRAM may also be available through the FSMC.
In order to use FSMC SRAM, the following additional things need to be
@ -483,19 +483,19 @@ There are 4 possible SRAM configurations:
Configuration 1. System SRAM (only)
CONFIG_MM_REGIONS == 1
CONFIG_STM32_FSMC_SRAM NOT defined
CONFIG_STM32_TCMEXCLUDE defined
Configuration 2. System SRAM and TCM SRAM
CONFIG_STM32_CCMEXCLUDE defined
Configuration 2. System SRAM and CCM SRAM
CONFIG_MM_REGIONS == 2
CONFIG_STM32_FSMC_SRAM NOT defined
CONFIG_STM32_TCMEXCLUDE NOT defined
CONFIG_STM32_CCMEXCLUDE NOT defined
Configuration 3. System SRAM and FSMC SRAM
CONFIG_MM_REGIONS == 2
CONFIG_STM32_FSMC_SRAM defined
CONFIG_STM32_TCMEXCLUDE defined
Configuration 4. System SRAM, TCM SRAM, and FSMC SRAM
CONFIG_STM32_CCMEXCLUDE defined
Configuration 4. System SRAM, CCM SRAM, and FSMC SRAM
CONFIG_MM_REGIONS == 3
CONFIG_STM32_FSMC_SRAM defined
CONFIG_STM32_TCMEXCLUDE NOT defined
CONFIG_STM32_CCMEXCLUDE NOT defined
STM3240G-EVAL-specific Configuration Options
============================================
@ -554,7 +554,7 @@ STM3240G-EVAL-specific Configuration Options
CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP
CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP
In addition to internal SRAM, SRAM may also be available through the FSMC.
In order to use FSMC SRAM, the following additional things need to be
@ -948,9 +948,9 @@ Where <subdir> is one of the following:
4. In order to use SDIO without overruns, DMA must be used. The STM32 F4
has 192Kb of SRAM in two banks: 112Kb of "system" SRAM located at
0x2000:0000 and 64Kb of "TCM" SRAM located at 0x1000:0000. It appears
that you cannot perform DMA from TCM SRAM. The work around that I have now
is simply to omit the 64Kb of TCM SRAM from the heap so that all memory is
0x2000:0000 and 64Kb of "CCM" SRAM located at 0x1000:0000. It appears
that you cannot perform DMA from CCM SRAM. The work around that I have now
is simply to omit the 64Kb of CCM SRAM from the heap so that all memory is
allocated from System SRAM. This is done by setting:
CONFIG_MM_REGIONS=1

6
nuttx/configs/stm3240g-eval/dhcpd/defconfig
View File

@ -121,10 +121,10 @@ CONFIG_STM32_JTAG_NOJNTRST_ENABLE=n
CONFIG_STM32_JTAG_SW_ENABLE=n
#
# On-chip TCM SRAM configuration
# On-chip CCM SRAM configuration
#
# CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able TCM memory from
# CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able CCM memory from
# being a part of the stack.
#

2
nuttx/configs/stm3240g-eval/dhcpd/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

6
nuttx/configs/stm3240g-eval/nettest/defconfig
View File

@ -121,10 +121,10 @@ CONFIG_STM32_JTAG_NOJNTRST_ENABLE=n
CONFIG_STM32_JTAG_SW_ENABLE=n
#
# On-chip TCM SRAM configuration
# On-chip CCM SRAM configuration
#
# CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able TCM memory from
# CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able CCM memory from
# being a part of the stack.
#

2
nuttx/configs/stm3240g-eval/nettest/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

6
nuttx/configs/stm3240g-eval/nsh/defconfig
View File

@ -121,10 +121,10 @@ CONFIG_STM32_JTAG_NOJNTRST_ENABLE=n
CONFIG_STM32_JTAG_SW_ENABLE=n
#
# On-chip TCM SRAM configuration
# On-chip CCM SRAM configuration
#
# CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able TCM memory from
# CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able CCM memory from
# being a part of the stack.
#

2
nuttx/configs/stm3240g-eval/nsh/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

8
nuttx/configs/stm3240g-eval/nsh2/defconfig
View File

@ -121,13 +121,13 @@ CONFIG_STM32_JTAG_NOJNTRST_ENABLE=n
CONFIG_STM32_JTAG_SW_ENABLE=n
#
# On-chip TCM SRAM configuration
# On-chip CCM SRAM configuration
#
# CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able TCM memory from
# CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able CCM memory from
# being a part of the stack.
#
CONFIG_STM32_TCMEXCLUDE=y
CONFIG_STM32_CCMEXCLUDE=y
#
# On-board FSMC SRAM configuration

2
nuttx/configs/stm3240g-eval/nsh2/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

6
nuttx/configs/stm3240g-eval/ostest/defconfig
View File

@ -121,10 +121,10 @@ CONFIG_STM32_JTAG_NOJNTRST_ENABLE=n
CONFIG_STM32_JTAG_SW_ENABLE=n
#
# On-chip TCM SRAM configuration
# On-chip CCM SRAM configuration
#
# CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able TCM memory from
# CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able CCM memory from
# being a part of the stack.
#

2
nuttx/configs/stm3240g-eval/ostest/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

6
nuttx/configs/stm3240g-eval/telnetd/defconfig
View File

@ -121,10 +121,10 @@ CONFIG_STM32_JTAG_NOJNTRST_ENABLE=n
CONFIG_STM32_JTAG_SW_ENABLE=n
#
# On-chip TCM SRAM configuration
# On-chip CCM SRAM configuration
#
# CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able TCM memory from
# CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP. You would need
# to do this if DMA is enabled to prevent non-DMA-able CCM memory from
# being a part of the stack.
#

2
nuttx/configs/stm3240g-eval/telnetd/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

20
nuttx/configs/stm32f4discovery/README.txt
View File

@ -432,11 +432,11 @@ reference in case you choose to add some.
Configuration Options
---------------------
Internal SRAM is available in all members of the STM32 family. The F4 family
also contains internal TCM SRAM. This SRAM is different because it cannot
also contains internal CCM SRAM. This SRAM is different because it cannot
be used for DMA. So if DMA needed, then the following should be defined
to exclude TCM SRAM from the heap:
to exclude CCM SRAM from the heap:
CONFIG_STM32_TCMEXCLUDE : Exclude TCM SRAM from the HEAP
CONFIG_STM32_CCMEXCLUDE : Exclude CCM SRAM from the HEAP
In addition to internal SRAM, SRAM may also be available through the FSMC.
In order to use FSMC SRAM, the following additional things need to be
@ -459,19 +459,19 @@ There are 4 possible SRAM configurations:
Configuration 1. System SRAM (only)
CONFIG_MM_REGIONS == 1
CONFIG_STM32_FSMC_SRAM NOT defined
CONFIG_STM32_TCMEXCLUDE defined
Configuration 2. System SRAM and TCM SRAM
CONFIG_STM32_CCMEXCLUDE defined
Configuration 2. System SRAM and CCM SRAM
CONFIG_MM_REGIONS == 2
CONFIG_STM32_FSMC_SRAM NOT defined
CONFIG_STM32_TCMEXCLUDE NOT defined
CONFIG_STM32_CCMEXCLUDE NOT defined
Configuration 3. System SRAM and FSMC SRAM
CONFIG_MM_REGIONS == 2
CONFIG_STM32_FSMC_SRAM defined
CONFIG_STM32_TCMEXCLUDE defined
Configuration 4. System SRAM, TCM SRAM, and FSMC SRAM
CONFIG_STM32_CCMEXCLUDE defined
Configuration 4. System SRAM, CCM SRAM, and FSMC SRAM
CONFIG_MM_REGIONS == 3
CONFIG_STM32_FSMC_SRAM defined
CONFIG_STM32_TCMEXCLUDE NOT defined
CONFIG_STM32_CCMEXCLUDE NOT defined
Configuration Changes
---------------------
@ -557,7 +557,7 @@ STM32F4Discovery-specific Configuration Options
CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
CONFIG_STM32_TCMEXCLUDE - Exclude TCM SRAM from the HEAP
CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP
In addition to internal SRAM, SRAM may also be available through the FSMC.
In order to use FSMC SRAM, the following additional things need to be

2
nuttx/configs/stm32f4discovery/nsh/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in

2
nuttx/configs/stm32f4discovery/ostest/ld.script
View File

@ -38,7 +38,7 @@
*
* 1) 112Kb of SRAM beginning at address 0x2000:0000
* 2) 16Kb of SRAM beginning at address 0x2001:c000
* 3) 64Kb of TCM SRAM beginning at address 0x1000:0000
* 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
*
* When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
* where the code expects to begin execution by jumping to the entry point in