I've got a custom board that was based on the walnut. I have a 2+ year old
version of u-boot working on it, but we are trying to go to the newer version
to match our newer hardware. The hardware is a 405gpr to spansion s29jl064.
I found another board using the same flash for some hints. Here are parts of
the config. I did not modify amcc-common.h (The debug and more info are
below).
#define CONFIG_SYS_FLASH_BASE 0xFF800000
#define FLASH_BASE0_PRELIM CONFIG_SYS_FLASH_BASE /* FLASH bank #0
*/
#define FLASH_BASE1_PRELIM 0 /* FLASH bank #1
*/
#define CONFIG_SYS_FLASH_CFI /* The flash is CFI compatible
*/
#define CONFIG_FLASH_CFI_DRIVER /* Use common CFI driver
*/
#undef CONFIG_SYS_FLASH_QUIET_TEST
#define CONFIG_SYS_FLASH_EMPTY_INFO /* print 'E' for empty sector on flinfo
*/
#define CONFIG_SYS_FLASH_ERASE_TOUT (3 * 1000)
#define CONFIG_SYS_FLASH_WRITE_TOUT (3 * 1000)
#define CONFIG_SYS_FLASH_LOCK_TOUT (3 * 1000)
#define CONFIG_SYS_FLASH_UNLOCK_TOUT (3 * 1000)
#undef CONFIG_SYS_FLASH_PROTECTION
#undef CONFIG_SYS_DIRECT_FLASH_TFTP
#define CONFIG_SYS_MAX_FLASH_BANKS 1 /* max number of memory banks
*/
#define CONFIG_SYS_MAX_FLASH_SECT 150 /* max number of sectors on one
chip */
#define CONFIG_SYS_FLASH_CFI_WDITH FLASH_CFI_8BIT
/* Memory Bank 0 (Flash Bank 0) initialization
*/
#define CONFIG_SYS_EBC_PB0AP 0x03015400
#define CONFIG_SYS_EBC_PB0CR 0xFF878000 /*
BAS=0xFFF,BS=1MB,BU=R/W,BW=8bit */
#if 0
#define CONFIG_SYS_EBC_PB1AP 0x02815480
#define CONFIG_SYS_EBC_PB1CR 0xF0018000 /*
BAS=0xF00,BS=1MB,BU=R/W,BW=8bit */
#define CONFIG_SYS_EBC_PB2AP 0x03011380
#define CONFIG_SYS_EBC_PB2CR 0xC00FC000 /*
BAS=0xF01,BS=1MB,BU=R/W,BW=8bit */
#define CONFIG_SYS_EBC_PB3AP 0x01815280
#define CONFIG_SYS_EBC_PB3CR 0xF0218000 /*
BAS=0xF02,BS=1MB,BU=R/W,BW=8bit */
#define CONFIG_SYS_EBC_PB7AP 0x01815280
#define CONFIG_SYS_EBC_PB7CR 0xF0318000 /*
BAS=0xF03,BS=1MB,BU=R/W,BW=8bit */
#endif
/*-----------------------------------------------------------------------
* External peripheral base address
*-----------------------------------------------------------------------
*/
#define CONFIG_KEY_REG_BASE_ADDR 0xF0100000
#define CONFIG_IR_REG_BASE_ADDR 0xF0200000
#define CONFIG_FPGA_REG_BASE_ADDR 0xF0300000
/*-----------------------------------------------------------------------
* Definitions for initial stack pointer and data area
*/
#define CONFIG_SYS_INIT_DCACHE_CS 3 /* use cs # 4 for data cache
memory */
#define CONFIG_SYS_INIT_RAM_ADDR 0x40000000 /* inside of SDRAM
*/
#define CONFIG_SYS_INIT_RAM_END 0x2000 /* End of used area in RAM
*/
#define CONFIG_SYS_GBL_DATA_SIZE 128 /* size in bytes reserved for
initial data */
#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_END -
CONFIG_SYS_GBL_DATA_SIZE)
#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
/*-----------------------------------------------------------------------
* Definitions for Serial Presence Detect EEPROM address
* (to get SDRAM settings)
*/
#define SPD_EEPROM_ADDRESS 0x50
#undef CONFIG_IDE_LED
#undef CONFIG_IDE_RESET
#undef CONFIG_HW_WATCHDOG
The walnut doesn't use the generic CFI driver, but I saw no reason that I could
not, so I enabled it. With that and debug on, I get the output below. It can't
seem to read the MFR Id. I confirmed that I can read it with the BDI after I do
a reset halt. If I do a reset run, then halt, I *cannot* read the flash Id. It
makes me think that the PB0AP or CR are wrong, but viewing them on the BDI, they
are identical. I
Here is the cmd I use to read the mfr id and the output (correct)
Core#0>mmb 0xFF800aaa 0xaa; mmb 0xFF800555 0x55; mmb 0xFF800aaa 0x90; mdb
0xFF800000 1
ff800000 : 0x01 1 .
With DEBUG enabled, I get the following output ....
U-Boot 2008.10 (Dec 30 2009 - 16:20:32)
CPU: AMCC PowerPC 405GPr Rev. B at 266.667 MHz (PLB=133, OPB=66, EBC=33 MHz)
Internal PCI arbiter disabled, PCI sync clock at 33 MHz
16 kB I-Cache 16 kB D-Cache
Board: TanoEngine - AMCC PPC405GPr
I2C: ready
DRAM: 64 MB
FLASH: flash detect cfi
fwc addr ff800000 cmd f0 f0 8bit x 8 bit
fwc addr ff800000 cmd ff ff 8bit x 8 bit
fwc addr ff800055 cmd 98 98 8bit x 8 bit
is= cmd 51(Q) addr ff800010 is= ff 51
fwc addr ff800555 cmd 98 98 8bit x 8 bit
is= cmd 51(Q) addr ff800010 is= ff 51
fwc addr ff800000 cmd f0 f0f0 16bit x 8 bit
fwc addr ff800000 cmd ff ffff 16bit x 8 bit
fwc addr ff8000aa cmd 98 9898 16bit x 8 bit
is= cmd 51(Q) addr ff800020 is= ffff 5151
fwc addr ff800aaa cmd 98 9898 16bit x 8 bit
is= cmd 51(Q) addr ff800020 is= ffff 5151
fwc addr ff800000 cmd f0 00f0 16bit x 16 bit
fwc addr ff800000 cmd ff 00ff 16bit x 16 bit
fwc addr ff8000aa cmd 98 0098 16bit x 16 bit
is= cmd 51(Q) addr ff800020 is= ffff 0051
fwc addr ff800aaa cmd 98 0098 16bit x 16 bit
is= cmd 51(Q) addr ff800020 is= ffff 0051
fwc addr ff800000 cmd f0 f0f0f0f0 32bit x 8 bit
fwc addr ff800000 cmd ff ffffffff 32bit x 8 bit
fwc addr ff800154 cmd 98 98989898 32bit x 8 bit
is= cmd 51(Q) addr ff800040 is= ffffffff 51515151
fwc addr ff801554 cmd 98 98989898 32bit x 8 bit
is= cmd 51(Q) addr ff800040 is= ffffffff 51515151
fwc addr ff800000 cmd f0 00f000f0 32bit x 16 bit
fwc addr ff800000 cmd ff 00ff00ff 32bit x 16 bit
fwc addr ff800154 cmd 98 00980098 32bit x 16 bit
is= cmd 51(Q) addr ff800040 is= ffffffff 00510051
fwc addr ff801554 cmd 98 00980098 32bit x 16 bit
is= cmd 51(Q) addr ff800040 is= ffffffff 00510051
fwc addr ff800000 cmd f0 000000f0 32bit x 32 bit
fwc addr ff800000 cmd ff 000000ff 32bit x 32 bit
fwc addr ff800154 cmd 98 00000098 32bit x 32 bit
is= cmd 51(Q) addr ff800040 is= ffffffff 00000051
fwc addr ff801554 cmd 98 00000098 32bit x 32 bit
is= cmd 51(Q) addr ff800040 is= ffffffff 00000051
fwrite addr ff800000 cmd f0 f0f0f0f0f0f0f0f0 64 bit x 8 bit
fwrite addr ff800000 cmd ff ffffffffffffffff 64 bit x 8 bit
fwrite addr ff8002a8 cmd 98 9898989898989898 64 bit x 8 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 5151515151515151
fwrite addr ff802aa8 cmd 98 9898989898989898 64 bit x 8 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 5151515151515151
fwrite addr ff800000 cmd f0 00f000f000f000f0 64 bit x 16 bit
fwrite addr ff800000 cmd ff 00ff00ff00ff00ff 64 bit x 16 bit
fwrite addr ff8002a8 cmd 98 0098009800980098 64 bit x 16 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 0051005100510051
fwrite addr ff802aa8 cmd 98 0098009800980098 64 bit x 16 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 0051005100510051
fwrite addr ff800000 cmd f0 000000f0000000f0 64 bit x 32 bit
fwrite addr ff800000 cmd ff 000000ff000000ff 64 bit x 32 bit
fwrite addr ff8002a8 cmd 98 0000009800000098 64 bit x 32 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 0000005100000051
fwrite addr ff802aa8 cmd 98 0000009800000098 64 bit x 32 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 0000005100000051
fwrite addr ff800000 cmd f0 00000000000000f0 64 bit x 64 bit
fwrite addr ff800000 cmd ff 00000000000000ff 64 bit x 64 bit
fwrite addr ff8002a8 cmd 98 0000000000000098 64 bit x 64 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 0000000000000051
fwrite addr ff802aa8 cmd 98 0000000000000098 64 bit x 64 bit
is= cmd 51(Q) addr ff800080 is= ffffffffffffffff 0000000000000051
not found
## Unknown FLASH on Bank 1 - Size = 0x00000000 = 0 MB
*** failed ***
### ERROR ### Please RESET the board ###
Thanks,
Ayman
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