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new 438cb4a16a xtensa/esp32s3: Add rtc heap support
438cb4a16a is described below
commit 438cb4a16a4e4bc704d79313137225d943f28cc5
Author: Eren Terzioglu <[email protected]>
AuthorDate: Fri Nov 10 19:41:07 2023 +0300
xtensa/esp32s3: Add rtc heap support
---
arch/xtensa/Kconfig | 1 +
arch/xtensa/src/esp32s3/Kconfig | 5 +
arch/xtensa/src/esp32s3/Make.defs | 8 +
arch/xtensa/src/esp32s3/esp32s3_extraheaps.c | 9 ++
arch/xtensa/src/esp32s3/esp32s3_imm.c | 18 +--
arch/xtensa/src/esp32s3/esp32s3_rtcheap.c | 34 ++++-
arch/xtensa/src/esp32s3/esp32s3_rtcheap.h | 41 +++++-
arch/xtensa/src/esp32s3/esp32s3_textheap.c | 161 +++++++++++++++++++++
arch/xtensa/src/esp32s3/hardware/esp32s3_soc.h | 20 +++
.../xtensa/esp32s3/common/scripts/flat_memory.ld | 3 +
.../esp32s3/common/scripts/legacy_sections.ld | 11 ++
.../esp32s3/common/scripts/mcuboot_sections.ld | 5 +
.../esp32s3-devkit/configs/sotest/defconfig | 52 +++++++
13 files changed, 357 insertions(+), 11 deletions(-)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 47671e8337..eec777b1a4 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -83,6 +83,7 @@ config ARCH_CHIP_ESP32S3
select ARCH_HAVE_MPU
select ARCH_HAVE_MULTICPU
select ARCH_HAVE_RESET
+ select ARCH_HAVE_TEXT_HEAP
select ARCH_HAVE_TESTSET
select ARCH_VECNOTIRQ
select LIBC_PREVENT_STRING_KERNEL
diff --git a/arch/xtensa/src/esp32s3/Kconfig b/arch/xtensa/src/esp32s3/Kconfig
index 396cd96b0e..f4d8faff62 100644
--- a/arch/xtensa/src/esp32s3/Kconfig
+++ b/arch/xtensa/src/esp32s3/Kconfig
@@ -906,6 +906,11 @@ config ESP32S3_SPIRAM_USER_HEAP
endchoice # ESP32S3_SPIRAM_HEAP
+config ESP32S3_RTC_HEAP
+ bool "Use the RTC memory as a separate heap"
+ select ARCH_HAVE_EXTRA_HEAPS
+ default n
+
endmenu # Memory Configuration
config ESP32S3_GPIO_IRQ
diff --git a/arch/xtensa/src/esp32s3/Make.defs
b/arch/xtensa/src/esp32s3/Make.defs
index 502fcbcf14..a0c90f09ee 100644
--- a/arch/xtensa/src/esp32s3/Make.defs
+++ b/arch/xtensa/src/esp32s3/Make.defs
@@ -156,6 +156,14 @@ ifeq ($(CONFIG_ARCH_HAVE_EXTRA_HEAPS),y)
CHIP_CSRCS += esp32s3_extraheaps.c
endif
+ifeq ($(CONFIG_ESP32S3_RTC_HEAP),y)
+CHIP_CSRCS += esp32s3_rtcheap.c
+endif
+
+ifeq ($(CONFIG_ARCH_USE_TEXT_HEAP),y)
+CHIP_CSRCS += esp32s3_textheap.c
+endif
+
ifeq ($(CONFIG_ESP32S3_TOUCH),y)
CHIP_CSRCS += esp32s3_touch.c
endif
diff --git a/arch/xtensa/src/esp32s3/esp32s3_extraheaps.c
b/arch/xtensa/src/esp32s3/esp32s3_extraheaps.c
index 539cfaa402..48688a6d70 100644
--- a/arch/xtensa/src/esp32s3/esp32s3_extraheaps.c
+++ b/arch/xtensa/src/esp32s3/esp32s3_extraheaps.c
@@ -25,6 +25,10 @@
#include <nuttx/config.h>
#include <nuttx/mm/mm.h>
+#ifdef CONFIG_ESP32S3_RTC_HEAP
+# include "esp32s3_rtcheap.h"
+#endif
+
/****************************************************************************
* Public Functions
****************************************************************************/
@@ -42,5 +46,10 @@ void up_extraheaps_init(void)
#ifdef CONFIG_XTENSA_IMEM_USE_SEPARATE_HEAP
xtensa_imm_initialize();
#endif
+#ifdef CONFIG_ESP32S3_RTC_HEAP
+ /* Initialize the RTC heap */
+
+ esp32s3_rtcheap_initialize();
+#endif
}
diff --git a/arch/xtensa/src/esp32s3/esp32s3_imm.c
b/arch/xtensa/src/esp32s3/esp32s3_imm.c
index e1e432670c..c8ed901c84 100644
--- a/arch/xtensa/src/esp32s3/esp32s3_imm.c
+++ b/arch/xtensa/src/esp32s3/esp32s3_imm.c
@@ -79,7 +79,7 @@ void xtensa_imm_initialize(void)
* size - Size (in bytes) of the memory region to be allocated.
*
* Return Value:
- * Adress of the allocated memory space. NULL, if allocation fails.
+ * Address of the allocated memory space. NULL, if allocation fails.
*
****************************************************************************/
@@ -100,7 +100,7 @@ void *xtensa_imm_malloc(size_t size)
* elem_size - Size (in bytes) of the type to be allocated.
*
* Return Value:
- * Adress of the allocated memory space. NULL, if allocation fails.
+ * Address of the allocated memory space. NULL, if allocation fails.
*
****************************************************************************/
@@ -116,11 +116,11 @@ void *xtensa_imm_calloc(size_t n, size_t elem_size)
* Reallocate memory from the internal heap.
*
* Input Parameters:
- * ptr - Adress to be reallocate.
- * size - Size (in bytes) to be reallocate.
+ * ptr - Address to be reallocated.
+ * size - Size (in bytes) to be reallocated.
*
* Return Value:
- * Adress of the possibly moved memory space. NULL, if allocation fails.
+ * Address of the possibly moved memory space. NULL, if allocation fails.
*
****************************************************************************/
@@ -139,7 +139,7 @@ void *xtensa_imm_realloc(void *ptr, size_t size)
* size - Size (in bytes) of the memory region to be allocated.
*
* Return Value:
- * Adress of the allocated memory space. NULL, if allocation fails.
+ * Address of the allocated memory space. NULL, if allocation fails.
*
****************************************************************************/
@@ -155,7 +155,7 @@ void *xtensa_imm_zalloc(size_t size)
* Free memory from the internal heap.
*
* Input Parameters:
- * mem - Adress to be freed.
+ * mem - Address to be freed.
*
* Returned Value:
* None.
@@ -180,10 +180,10 @@ void xtensa_imm_free(void *mem)
*
* Input Parameters:
* alignment - Requested alignment.
- * size - Size (in bytes) of the memory region to be allocated.
+ * size - Size (in bytes) of the memory region to be allocated.
*
* Return Value:
- * Adress of the allocated adress. NULL, if allocation fails.
+ * Address of the allocated address. NULL, if allocation fails.
*
****************************************************************************/
diff --git a/arch/xtensa/src/esp32s3/esp32s3_rtcheap.c
b/arch/xtensa/src/esp32s3/esp32s3_rtcheap.c
index 1fe5293a5f..87946e7344 100644
--- a/arch/xtensa/src/esp32s3/esp32s3_rtcheap.c
+++ b/arch/xtensa/src/esp32s3/esp32s3_rtcheap.c
@@ -75,6 +75,9 @@ void esp32s3_rtcheap_initialize(void)
* Parameters:
* size - Size (in bytes) of the memory region to be allocated.
*
+ * Return Value:
+ * Address of the allocated memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_malloc(size_t size)
@@ -86,9 +89,16 @@ void *esp32s3_rtcheap_malloc(size_t size)
* Name: esp32s3_rtcheap_calloc
*
* Description:
- * Calculates the size of the allocation and allocate memory from
+ * Calculates the size of the allocation and allocates memory from
* the RTC heap.
*
+ * Parameters:
+ * n - Size (in types) of the memory region to be allocated.
+ * elem_size - Size (in bytes) of the type to be allocated.
+ *
+ * Return Value:
+ * Address of the allocated memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_calloc(size_t n, size_t elem_size)
@@ -102,6 +112,13 @@ void *esp32s3_rtcheap_calloc(size_t n, size_t elem_size)
* Description:
* Reallocate memory from the RTC heap.
*
+ * Parameters:
+ * ptr - Address to be reallocated.
+ * size - Size (in bytes) to be reallocated.
+ *
+ * Return Value:
+ * Address of the possibly moved memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_realloc(void *ptr, size_t size)
@@ -115,6 +132,12 @@ void *esp32s3_rtcheap_realloc(void *ptr, size_t size)
* Description:
* Allocate and zero memory from the RTC heap.
*
+ * Parameters:
+ * size - Size (in bytes) of the memory region to be allocated.
+ *
+ * Return Value:
+ * Address of the allocated memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_zalloc(size_t size)
@@ -128,6 +151,9 @@ void *esp32s3_rtcheap_zalloc(size_t size)
* Description:
* Free memory from the RTC heap.
*
+ * Parameters:
+ * mem - Address to be freed.
+ *
****************************************************************************/
void esp32s3_rtcheap_free(void *mem)
@@ -150,6 +176,9 @@ void esp32s3_rtcheap_free(void *mem)
* alignment - Requested alignment.
* size - Size (in bytes) of the memory region to be allocated.
*
+ * Return Value:
+ * Address of the allocated adddress. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_memalign(size_t alignment, size_t size)
@@ -184,6 +213,9 @@ bool esp32s3_rtcheap_heapmember(void *mem)
* user heap.
*
* Parameters:
+ * None.
+ *
+ * Return Value:
* info - Where memory information will be copied.
*
****************************************************************************/
diff --git a/arch/xtensa/src/esp32s3/esp32s3_rtcheap.h
b/arch/xtensa/src/esp32s3/esp32s3_rtcheap.h
index 9909f812ba..edd8d56c3c 100644
--- a/arch/xtensa/src/esp32s3/esp32s3_rtcheap.h
+++ b/arch/xtensa/src/esp32s3/esp32s3_rtcheap.h
@@ -54,6 +54,9 @@ void esp32s3_rtcheap_initialize(void);
* Parameters:
* size - Size (in bytes) of the memory region to be allocated.
*
+ * Return Value:
+ * Address of the allocated memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_malloc(size_t size);
@@ -62,9 +65,16 @@ void *esp32s3_rtcheap_malloc(size_t size);
* Name: esp32s3_rtcheap_calloc
*
* Description:
- * Calculates the size of the allocation and allocate memory from
+ * Calculates the size of the allocation and allocates memory from
* the RTC heap.
*
+ * Parameters:
+ * n - Size (in types) of the memory region to be allocated.
+ * elem_size - Size (in bytes) of the type to be allocated.
+ *
+ * Return Value:
+ * Address of the allocated memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_calloc(size_t n, size_t elem_size);
@@ -75,6 +85,13 @@ void *esp32s3_rtcheap_calloc(size_t n, size_t elem_size);
* Description:
* Reallocate memory from the RTC heap.
*
+ * Parameters:
+ * ptr - Address to be reallocated.
+ * size - Size (in bytes) to be reallocated.
+ *
+ * Return Value:
+ * Address of the possibly moved memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_realloc(void *ptr, size_t size);
@@ -85,6 +102,12 @@ void *esp32s3_rtcheap_realloc(void *ptr, size_t size);
* Description:
* Allocate and zero memory from the RTC heap.
*
+ * Parameters:
+ * size - Size (in bytes) of the memory region to be allocated.
+ *
+ * Return Value:
+ * Address of the allocated memory space. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_zalloc(size_t size);
@@ -95,6 +118,9 @@ void *esp32s3_rtcheap_zalloc(size_t size);
* Description:
* Free memory from the RTC heap.
*
+ * Parameters:
+ * mem - Address to be freed.
+ *
****************************************************************************/
void esp32s3_rtcheap_free(void *mem);
@@ -110,6 +136,13 @@ void esp32s3_rtcheap_free(void *mem);
* The alignment argument must be a power of two (not checked). 8-byte
* alignment is guaranteed by normal malloc calls.
*
+ * Parameters:
+ * alignment - Requested alignment.
+ * size - Size (in bytes) of the memory region to be allocated.
+ *
+ * Return Value:
+ * Address of the allocated adddress. NULL, if allocation fails.
+ *
****************************************************************************/
void *esp32s3_rtcheap_memalign(size_t alignment, size_t size);
@@ -137,6 +170,12 @@ bool esp32s3_rtcheap_heapmember(void *mem);
* mallinfo returns a copy of updated current heap information for the
* user heap.
*
+ * Parameters:
+ * None.
+ *
+ * Return Value:
+ * info - Where memory information will be copied.
+ *
****************************************************************************/
struct mallinfo esp32s3_rtcheap_mallinfo(void);
diff --git a/arch/xtensa/src/esp32s3/esp32s3_textheap.c
b/arch/xtensa/src/esp32s3/esp32s3_textheap.c
new file mode 100644
index 0000000000..d6d1907fcc
--- /dev/null
+++ b/arch/xtensa/src/esp32s3/esp32s3_textheap.c
@@ -0,0 +1,161 @@
+/****************************************************************************
+ * arch/xtensa/src/esp32s3/esp32s3_textheap.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/arch.h>
+#include <nuttx/fs/procfs.h>
+#include <nuttx/mm/mm.h>
+
+#include <sys/types.h>
+#include <debug.h>
+#include <nuttx/kmalloc.h>
+
+#include "hardware/esp32s3_soc.h"
+
+#ifdef CONFIG_ESP32S3_RTC_HEAP
+# include "esp32s3_rtcheap.h"
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef CONFIG_ESP32S3_RTC_HEAP
+#error "No suitable heap available. Enable ESP32S3_RTC_HEAP."
+#endif
+
+#define D_I_BUS_OFFSET 0x700000
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_textheap_memalign
+ *
+ * Description:
+ * memalign requests more than enough space from malloc, finds a region
+ * within that chunk that meets the alignment request and then frees any
+ * leading or trailing space in text heap.
+ *
+ * The alignment argument must be a power of two (not checked). 8-byte
+ * alignment is guaranteed by normal malloc calls.
+ *
+ * Parameters:
+ * align - Requested alignment.
+ * size - Size (in bytes) of the memory region to be allocated.
+ *
+ * Return Value:
+ * Address of the allocated address. NULL, if allocation fails.
+ *
+ ****************************************************************************/
+
+void *up_textheap_memalign(size_t align, size_t size)
+{
+ void *ret = NULL;
+
+ /* Prioritise allocating from RTC. If that fails, allocate from the
+ * main heap.
+ */
+
+#ifdef CONFIG_ESP32S3_RTC_HEAP
+ ret = esp32s3_rtcheap_memalign(align, size);
+#endif
+
+ if (ret == NULL)
+ {
+ ret = kmm_memalign(align, size);
+ if (ret)
+ {
+ /* kmm_memalign buffer is at the Data bus offset. Adjust it so we
+ * can access it from the Instruction bus.
+ */
+
+ ret += D_I_BUS_OFFSET;
+ }
+ }
+
+ return ret;
+}
+
+/****************************************************************************
+ * Name: up_textheap_free
+ *
+ * Description:
+ * Free memory from the text heap.
+ *
+ * Parameters:
+ * mem - Address to be freed.
+ *
+ ****************************************************************************/
+
+void up_textheap_free(void *p)
+{
+ if (p)
+ {
+#ifdef CONFIG_ESP32S3_RTC_HEAP
+ if (esp32s3_ptr_rtc(p))
+ {
+ esp32s3_rtcheap_free(p);
+ }
+ else
+#endif
+ {
+ p -= D_I_BUS_OFFSET;
+ kmm_free(p);
+ }
+ }
+}
+
+/****************************************************************************
+ * Name: up_textheap_heapmember
+ *
+ * Description:
+ * Check if an address lies in text heap.
+ *
+ * Parameters:
+ * mem - The address to check.
+ *
+ * Return Value:
+ * True if the address is a member of the text heap. False if not.
+ *
+ ****************************************************************************/
+
+bool up_textheap_heapmember(void *p)
+{
+ if (p == NULL)
+ {
+ return false;
+ }
+
+#ifdef CONFIG_ESP32S3_RTC_HEAP
+ if (esp32s3_ptr_rtc(p))
+ {
+ return esp32s3_rtcheap_heapmember(p);
+ }
+#endif
+
+ p -= D_I_BUS_OFFSET;
+ return kmm_heapmember(p);
+}
diff --git a/arch/xtensa/src/esp32s3/hardware/esp32s3_soc.h
b/arch/xtensa/src/esp32s3/hardware/esp32s3_soc.h
index d38ee869c6..f6337da0ec 100644
--- a/arch/xtensa/src/esp32s3/hardware/esp32s3_soc.h
+++ b/arch/xtensa/src/esp32s3/hardware/esp32s3_soc.h
@@ -553,6 +553,26 @@ static inline bool IRAM_ATTR esp32s3_ptr_exec(const void
*p)
|| (ip >= SOC_RTC_IRAM_LOW && ip < SOC_RTC_IRAM_HIGH);
}
+/****************************************************************************
+ * Name: esp32s3_ptr_rtc
+ *
+ * Description:
+ * Check if the buffer comes from the RTC RAM.
+ *
+ * Parameters:
+ * p - Address of the buffer.
+ *
+ * Return Value:
+ * True if given buffer comes from RTC RAM. False if not.
+ *
+ ****************************************************************************/
+
+static inline bool IRAM_ATTR esp32s3_ptr_rtc(const void *p)
+{
+ return ((intptr_t)p >= SOC_RTC_DATA_LOW &&
+ (intptr_t)p < SOC_RTC_DATA_HIGH);
+}
+
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_XTENSA_SRC_ESP32S3_HARDWARE_ESP32S3_SOC_H */
diff --git a/boards/xtensa/esp32s3/common/scripts/flat_memory.ld
b/boards/xtensa/esp32s3/common/scripts/flat_memory.ld
index 9a2acc1acb..0df435f650 100644
--- a/boards/xtensa/esp32s3/common/scripts/flat_memory.ld
+++ b/boards/xtensa/esp32s3/common/scripts/flat_memory.ld
@@ -179,3 +179,6 @@ MEMORY
REGION_ALIAS("default_code_seg", irom0_0_seg);
#endif /* CONFIG_ESP32S3_RUN_IRAM */
+/* Mark the end of the RTC heap (top of the RTC region) */
+
+_ertcheap = 0x50001fff;
diff --git a/boards/xtensa/esp32s3/common/scripts/legacy_sections.ld
b/boards/xtensa/esp32s3/common/scripts/legacy_sections.ld
index 22ebcdbcd8..ed4a6cbb34 100644
--- a/boards/xtensa/esp32s3/common/scripts/legacy_sections.ld
+++ b/boards/xtensa/esp32s3/common/scripts/legacy_sections.ld
@@ -367,4 +367,15 @@ SECTIONS
. = ALIGN(4);
_iram_end = ABSOLUTE(.);
} >iram0_0_seg
+
+ .rtc.data :
+ {
+ *(.rtc.data)
+ *(.rtc.rodata)
+
+ /* Whatever is left from the RTC memory is used as a special heap. */
+
+ . = ALIGN (4);
+ _srtcheap = ABSOLUTE(.);
+ } > rtc_slow_seg
}
diff --git a/boards/xtensa/esp32s3/common/scripts/mcuboot_sections.ld
b/boards/xtensa/esp32s3/common/scripts/mcuboot_sections.ld
index fe59f59fb7..e8cbb99b23 100644
--- a/boards/xtensa/esp32s3/common/scripts/mcuboot_sections.ld
+++ b/boards/xtensa/esp32s3/common/scripts/mcuboot_sections.ld
@@ -333,5 +333,10 @@ SECTIONS
{
*(.rtc.data)
*(.rtc.rodata)
+
+ /* Whatever is left from the RTC memory is used as a special heap. */
+
+ . = ALIGN (4);
+ _srtcheap = ABSOLUTE(.);
} >rtc_data_seg AT>ROM
}
diff --git a/boards/xtensa/esp32s3/esp32s3-devkit/configs/sotest/defconfig
b/boards/xtensa/esp32s3/esp32s3-devkit/configs/sotest/defconfig
new file mode 100644
index 0000000000..f996774c55
--- /dev/null
+++ b/boards/xtensa/esp32s3/esp32s3-devkit/configs/sotest/defconfig
@@ -0,0 +1,52 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed
.config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that
includes your
+# modifications.
+#
+# CONFIG_ARCH_LEDS is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+CONFIG_ARCH="xtensa"
+CONFIG_ARCH_BOARD="esp32s3-devkit"
+CONFIG_ARCH_BOARD_COMMON=y
+CONFIG_ARCH_BOARD_ESP32S3_DEVKIT=y
+CONFIG_ARCH_CHIP="esp32s3"
+CONFIG_ARCH_CHIP_ESP32S3=y
+CONFIG_ARCH_CHIP_ESP32S3WROOM1=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_XTENSA=y
+CONFIG_BOARDCTL_OS_SYMTAB=y
+CONFIG_BOARDCTL_ROMDISK=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_BUILTIN=y
+CONFIG_ESP32S3_RTC_HEAP=y
+CONFIG_ESP32S3_UART0=y
+CONFIG_EXAMPLES_SOTEST=y
+CONFIG_EXPERIMENTAL=y
+CONFIG_FS_PROCFS=y
+CONFIG_FS_ROMFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_IDLETHREAD_STACKSIZE=3072
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LIBC_DLFCN=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=114688
+CONFIG_RAM_START=0x20000000
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_SYSLOG_BUFFER=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_UART0_SERIAL_CONSOLE=y
