diff options
Diffstat (limited to 'nuttx/configs/stm32f4discovery')
-rw-r--r-- | nuttx/configs/stm32f4discovery/README.txt | 44 | ||||
-rw-r--r-- | nuttx/configs/stm32f4discovery/kernel/up_userspace.c | 4 | ||||
-rw-r--r-- | nuttx/configs/stm32f4discovery/kostest/defconfig | 2 | ||||
-rw-r--r-- | nuttx/configs/stm32f4discovery/scripts/memory.ld | 34 |
4 files changed, 72 insertions, 12 deletions
diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt index e4ed26253..9df06c9d1 100644 --- a/nuttx/configs/stm32f4discovery/README.txt +++ b/nuttx/configs/stm32f4discovery/README.txt @@ -1156,6 +1156,50 @@ Where <subdir> is one of the following: nuttx.hex - The pass2 Intel HEX file (selected in defconfig) System.map - Symbols in the kernel-space ELF file + 4. Combining .hex files. If you plan to use the STM32 ST-Link Utility to + load the .hex files into FLASH, then you need to combine the two hex + files into a single .hex file. Here is how you can do that. + + a. The 'tail' of the nuttx.hex file should look something like this + (with my comments added): + + $ tail nuttx.hex + # 00, data records + ... + :10 9DC0 00 01000000000800006400020100001F0004 + :10 9DD0 00 3B005A0078009700B500D400F300110151 + :08 9DE0 00 30014E016D0100008D + # 05, Start Linear Address Record + :04 0000 05 0800 0419 D2 + # 01, End Of File record + :00 0000 01 FF + + Use an editor such as vi to remove the 05 and 01 records. + + b. The 'head' of the nuttx_user.hex file should look something like + this (again with my comments added): + + $ head nuttx_user.hex + # 04, Extended Linear Address Record + :02 0000 04 0801 F1 + # 00, data records + :10 8000 00 BD89 01084C800108C8110208D01102087E + :10 8010 00 0010 00201C1000201C1000203C16002026 + :10 8020 00 4D80 01085D80010869800108ED83010829 + ... + + Nothing needs to be done here. The nuttx_user.hex file should + be fine. + + c. Combine the edited nuttx.hex and un-edited nuttx_user.hex + file to produce a single combined hex file: + + $ cat nuttx.hex nuttx_user.hex >combined.hex + + Then use the combined.hex file with the STM32 ST-Link tool. If + you do this a lot, you will probably want to invest a little time + to develop a tool to automate these steps. + nsh: --- Configures the NuttShell (nsh) located at apps/examples/nsh. The diff --git a/nuttx/configs/stm32f4discovery/kernel/up_userspace.c b/nuttx/configs/stm32f4discovery/kernel/up_userspace.c index eb73f8069..87685e4ff 100644 --- a/nuttx/configs/stm32f4discovery/kernel/up_userspace.c +++ b/nuttx/configs/stm32f4discovery/kernel/up_userspace.c @@ -56,8 +56,8 @@ # error "CONFIG_NUTTX_USERSPACE not defined" #endif -#if CONFIG_NUTTX_USERSPACE != 0x08018000 -# error "CONFIG_NUTTX_USERSPACE must be 0x08018000 to match memory.ld" +#if CONFIG_NUTTX_USERSPACE != 0x08020000 +# error "CONFIG_NUTTX_USERSPACE must be 0x08020000 to match memory.ld" #endif /**************************************************************************** diff --git a/nuttx/configs/stm32f4discovery/kostest/defconfig b/nuttx/configs/stm32f4discovery/kostest/defconfig index 623c5d4d2..316ba3f80 100644 --- a/nuttx/configs/stm32f4discovery/kostest/defconfig +++ b/nuttx/configs/stm32f4discovery/kostest/defconfig @@ -26,7 +26,7 @@ CONFIG_PASS1_TARGET="all" CONFIG_PASS1_BUILDIR="configs/stm32f4discovery/kernel" CONFIG_PASS1_OBJECT="" CONFIG_NUTTX_KERNEL=y -CONFIG_NUTTX_USERSPACE=0x08018000 +CONFIG_NUTTX_USERSPACE=0x08020000 # # Binary Output Formats diff --git a/nuttx/configs/stm32f4discovery/scripts/memory.ld b/nuttx/configs/stm32f4discovery/scripts/memory.ld index e1d89450e..7d4339d9a 100644 --- a/nuttx/configs/stm32f4discovery/scripts/memory.ld +++ b/nuttx/configs/stm32f4discovery/scripts/memory.ld @@ -36,19 +36,35 @@ /* The STM32F407VG has 1024Kb of FLASH beginning at address 0x0800:0000 and * 192Kb of SRAM. SRAM is split up into three blocks: * - * 1) 112Kb of SRAM beginning at address 0x2000:0000 - * 2) 16Kb of SRAM beginning at address 0x2001:c000 - * 3) 64Kb of CCM SRAM beginning at address 0x1000:0000 + * 1) 112KB of SRAM beginning at address 0x2000:0000 + * 2) 16KB of SRAM beginning at address 0x2001:c000 + * 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 * the 0x0800:0000 address * range. * - * For MPU support, the kernel-mode NuttX section is assumed to be 96Kb of - * FLASH and 4Kb of SRAM. That, of course, can be optimized as needed (See - * also configs/stm32f4discovery/scripts/kernel-space.ld). A detailed memory map - * for the CPU SRAM region is as follows: + * For MPU support, the kernel-mode NuttX section is assumed to be 128Kb of + * FLASH and 4Kb of SRAM. That is an excessive amount for the kernel which + * should fit into 64KB and, of course, can be optimized as needed (See + * also configs/stm32f4discovery/scripts/kernel-space.ld). Allowing the + * additional does permit addition debug instrumentation to be added to the + * kernel space without overflowing the partition. + * + * Alignment of the user space FLASH partition is also a critical factor: + * The user space FLASH partition will be spanned with a single region of + * size 2**n bytes. The alignment of the user-space region must be the same. + * As a consequence, as the user-space increases in size, the alignmment + * requirement also increases. + * + * This alignment requirement means that the largest user space FLASH region + * you can have will be 512KB at it would have to be positioned at + * 0x08800000. If you change this address, don't forget to chagne the + * CONFIG_NUTTX_USERSPACE configuration setting to match and to modify + * the check in kernel/userspace.c. + * + * A detailed memory map for the 112KB SRAM region is as follows: * * 0x20000 0000: Kernel .data region. Typical size: 0.1KB * ------- ---- Kernel .bss region. Typical size: 1.8KB @@ -68,8 +84,8 @@ MEMORY { /* 1024Kb FLASH */ - kflash (rx) : ORIGIN = 0x08000000, LENGTH = 96K - uflash (rx) : ORIGIN = 0x08018000, LENGTH = 928K + kflash (rx) : ORIGIN = 0x08000000, LENGTH = 128K + uflash (rx) : ORIGIN = 0x08020000, LENGTH = 896K /* 112Kb of contiguous SRAM */ |