Adarsh Babu <adarshrbpin <at> yahoo.co.in> writes:
Jerry Van Baren <gerald.vanbaren <at> smiths-aerospace.com> writes:
Adarsh Babu wrote:
Hi,
I have an image which is 1.5MB in size after compression, thats is done
for
MCF5271. When i try to load this on a MCF5271 eval board using u-boot
1.2.0 it
takes about 25 secs to just uncompress. I loaded a MCF5272 eval board
with
U-
Boot 1.2.0 and then tried to start the same image(which was done for
MCF5271).
It was very fast. The checksum verification finish off in a second and uncompression in 10 seconds !
The clock configurations for both are provided below: M5272C3.h define CFG_HZ 1000 #define CFG_CLK 66000000
M5271EVB.h: define CFG_HZ 1000000 #define CFG_CLK 100000000
What should I do to get the image to uncompress faster in the MCF5271
EVB?
Regards, Adarsh.
- Your CFG_HZ looks like a problem: it should be 1000 and your timer
tick interrupt should be running 1000 times per second to match. If you are indeed ticking 1,000,000 times per second, you are spending all of your processor time in your timer ISR.
- Why is your image 1.5MB? I suspect you have large unused areas of
memory (typically due to ISR vectors, followed by a huge unused gap, followed by the code). If you fix your image size (assuming it is broken), the checksum and uncompress will be much faster.
gvb
Hi Jerry,
I tried the same after modifying the CFG_HZ to 1000. But i still get the
same
result. Its as if there is no effect. The image size is 1.5MB becos its just not a kernel image. Its kernel + our application. Could this be a problem
with
the timer initialization and cofiguration?
Regards, Adarsh.
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Hi Jerry,
The MCF5271EVB.h found in u-boot-1.2.0 is something like this. #ifndef _M5271EVB_H #define _M5271EVB_H
#define DEBUG #undef DEBUG
/* * High Level Configuration Options (easy to change) */ #define CONFIG_MCF52x2 /* define processor family */ #define CONFIG_M5271 /* define processor type */ #define CONFIG_M5271EVB /* define board type */
#define CONFIG_IPADDR 192.168.30.1 #define CONFIG_SERVERIP 192.168.1.1 #define CONFIG_ETHADDR 00:06:3b:01:41:55
#define CONFIG_BAUDRATE 19200 #define CFG_BAUDRATE_TABLE { 9600 , 19200 , 38400 , 57600, 115200 }
#undef CONFIG_WATCHDOG /* disable watchdog */
#define CONFIG_BOOTDELAY 5
/* Configuration for environment * Environment is embedded in u-boot in the second sector of the flash */ #ifndef CONFIG_MONITOR_IS_IN_RAM #define CFG_ENV_OFFSET 0x4000 #define CFG_ENV_SECT_SIZE 0x2000 #define CFG_ENV_IS_IN_FLASH 1 #else #define CFG_ENV_ADDR 0xffe04000 #define CFG_ENV_SECT_SIZE 0x2000 #define CFG_ENV_IS_IN_FLASH 1 #endif
#define CONFIG_COMMANDS ((CONFIG_CMD_DFL | CFG_CMD_PING | CFG_CMD_NET ) & ~ (CFG_CMD_LOADS | CFG_CMD_LOADB))
/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */ #include <cmd_confdefs.h>
#define CFG_PROMPT "=> " #define CFG_LONGHELP /* undef to save memory */
#if (CONFIG_COMMANDS & CFG_CMD_KGDB) #define CFG_CBSIZE 1024 /* Console I/O Buffer Size */ #else #define CFG_CBSIZE 256 /* Console I/O Buffer Size */ #endif #define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */ #define CFG_MAXARGS 16 /* max number of command args */ #define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_LOAD_ADDR 0x00100000
#define CFG_MEMTEST_START 0x400 #define CFG_MEMTEST_END 0x380000
#define CFG_HZ 1000 #define CFG_CLK 100000000
/* * Low Level Configuration Settings * (address mappings, register initial values, etc.) * You should know what you are doing if you make changes here. */
#define CFG_MBAR 0x40000000 /* Register Base Addrs */
/* Enable FEC ethernet */ #define FEC_ENET #define CONFIG_NET_RETRY_COUNT 5 #define CFG_ENET_BD_BASE 0x480000
/* * Definitions for initial stack pointer and data area (in DPRAM) */ #define CFG_INIT_RAM_ADDR 0x20000000 #define CFG_INIT_RAM_END 0x1000 /* End of used area in internal SRAM */ #define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */ #define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE) #define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
/* * Start addresses for the final memory configuration * (Set up by the startup code) * Please note that CFG_SDRAM_BASE _must_ start at 0 */ #define CFG_SDRAM_BASE 0x00000000 #define CFG_SDRAM_SIZE 16 /* SDRAM size in MB */ #define CFG_FLASH_BASE 0xffe00000
#ifdef CONFIG_MONITOR_IS_IN_RAM #define CFG_MONITOR_BASE 0x20000 #else #define CFG_MONITOR_BASE (CFG_FLASH_BASE + 0x400) #endif
#define CFG_MONITOR_LEN 0x40000 #define CFG_MALLOC_LEN (256 << 10) #define CFG_BOOTPARAMS_LEN (64*1024)
/* * For booting Linux, the board info and command line data * have to be in the first 8 MB of memory, since this is * the maximum mapped by the Linux kernel during initialization ?? */ #define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
/* FLASH organization */ #define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */ #define CFG_MAX_FLASH_SECT 11 /* max number of sectors on one chip */ #define CFG_FLASH_ERASE_TOUT 1000
#define CFG_FLASH_CFI 1 #define CFG_FLASH_CFI_DRIVER 1 #define CFG_FLASH_SIZE 0x200000
/* Cache Configuration */ #define CFG_CACHELINE_SIZE 16
/* Port configuration */ #define CFG_FECI2C 0xF0
#endif /* _M5271EVB_H */
Does anything look odd or our of place in here that might cause the Image decompression to be close to 25 seconds??
Reagards, Adarsh.