diff options
Diffstat (limited to 'doc/README.adnpesc1')
| -rw-r--r-- | doc/README.adnpesc1 | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/doc/README.adnpesc1 b/doc/README.adnpesc1 deleted file mode 100644 index f9566b8ee8..0000000000 --- a/doc/README.adnpesc1 +++ /dev/null @@ -1,235 +0,0 @@ - - SSV ADNP/ESC1 Embedded Softcore Computing - Nios Softcore, Altera Cyclone FPGA - - Last Update: February 27, 2004 -==================================================================== - -This file contains information regarding U-Boot and the SSV Embedded -Nios Softcore Computing platform ADNP/ESC1. For general Nios -information see doc/README.nios. - -Most stuff of this file was borrowed and based on README.dk1s10, -the Altera DK-1S10 related information file. - -For those interested in contributing ... see HELP WANTED section -in doc/README.nios. - -Contents: - - 1. Files - 2. Memory Organization - 3. CPU Variations - 4. Examples - 5. Programming U-Boot into FLASH with GERMS - 6. Autoboot - 7. U-Boot environment convention and update philosophy - -==================================================================== - -1. Files -========= - board/ssv/adnpesc1/* - include/configs/ADNPESC1.h - include/configs/ADNPESC1_base_32.h - - -2. Memory Organization -======================= - -For the most part, you can put things pretty much anywhere. -This is pretty flexible for Nios. So here we make some arbitrary -choices & assume that the monitor is placed at the end of a memory -resource. So you must make sure TEXT_BASE is chosen appropriately. -This is very important if you plan to move your memory to another -place as configured at this time! - - -The heap is placed below the monitor (U-Boot code). - -Global data is placed below the heap. - -The stack is placed below global data (&grows down). - -(see doc/README.adnpesc1_base32 too) - - -3. CPU Variations -================= - -There are more than one NIOS CPU variation for the ADNP/ESC1 possible. -U-Boot supports the following CPU configurations: - - - SSV Basis 32 (make ADNPESC1_base_32_config) - - SSV Basis 32 at DNP evaluation base board 2 - (make ADNPESC1_DNPEVA2_base_32_config) - - -4. Examples -============ - -The hello_world example works fine. To try out you have to change -the default load address from 0x0100_0000 to 0x0204_0000 in -examples/Makefile (the real SDRAM for default board configuration). - - -5. Programming U-Boot into FLASH with GERMS -============================================ - -The current version of the ADNP/ESC1 port with the default -configuration settings occupies about 97 KBytes of flash. -A minimal configuration occupies less than 70 KByte -(network, SPI, POST and board command support disabled). You -can save more memory by deactivating the Hu-Shell support and -long command help (CONFIG_SYS_HUSH_PARSER, CONFIG_SYS_LONGHELP). - -To program U-Boot into the ADNP/ESC1 flash using GERMS do the -following: - -1. Download U-Boot to its target run space in SDRAM: - - a. Close jumper RCM_EN# and push the reset button. - - b. From the command line, download U-Boot using the - nios-run: - - $ nios-run -r u-boot.srec - - NOTE: In some cases this want fail. I don't know why, - but try again. - -This takes about 1 minute (GERMS is not very speedy here). -After u-boot is downloaded it will be executed. You should -see the following: - - U-Boot 1.0.2 (Jan 30 2004 - 12:59:15) - - CPU: Nios-32 Rev. 3.3 (0x3038) - Reg file size: 512 LO_LIMIT/HI_LIMIT: 1/30 - Board: SSV DilNetPC ADNP/ESC1 - Conf.: SSV Base 32 (nios_32) - In: serial - Out: serial - Err: serial - ADNPESC1 > - - -2. Quit nios-run and start your terminal application (e.g. start - Hyperterminal or minicom). - -3. Download the u-boot code to RAM. When using Hyperterminal, do the - following: - - a. From the u-boot command prompt start a binary download to SDRAM: - - at the SSV Basis 32 to SDRAM: - - ==> loadb 2000100 - - b. Download u-boot.bin using kermit. - -4. From the U-Boot command prompt, erase flash: - - at the SSV Basis 32 from 0x1000000 to 0x103ffff: - - ==> protect off 1:0-3 - ==> erase 1:0-3 - -5. Copy the binary image from SDRAM to flash: - - at the SSV Basis 32 from SDRAM: - - ==> cp.b 2000100 1000000 $filesize - -U-Boot will now automatically start when the board is powered on or -reset using the SSV Basis 32 configuration without closed RCM jumper. -To start U-Boot with closed RCM Jumper, enter the following GERMS -command: - - + g 1000000 - - -6. Autoboot -=========== - -U-Boot will try to boot a valid Nios application from Flash. For this -it will use the deposited Hu-Shell script in environment variable -'bootcmd' which is looking for a valid Nios application identifier -string in Flash and go on at even its entry address. For more -information see the next chapter. - - -7. U-Boot environment convention and update philosophy -====================================================== - -U-Boot for the SSV ADNP/ESC1 target knows about many environment -variables used to control the startup process, update process for -raw Nios applications, and optionally file system image updates. -In default configuration there are two Hu-Shell scripts to update -the Nios application and/or the file system image: - -1. Update Nios application (ex. the uCLinux kernel): - - run 'appl_update' - -2. Update optional file system image (ex. RomFS image used by uCLinux): - - run 'fs_update' - -The Nios application can be any programm code generated in relation -to the Nios application identifier -- the string "Nios" at offset -address 0x0c. To use the scripts like described above in a secure way -you have to check-up the next environment variables: - -1. update_allowed - - - Update switch -- must be set to '1' (one) to allow any update - - default is '0' (zero) - - NOTE: You should avoid to save this variable with non zero - value to Flash. Otherwise it would be allow any - update process at any time! - -2. appl_entry_addr - - - Nios application area start address (usually in Flash) - - this is the startup address for autoboot - - each Nios application code we want to update will be copied - to this address - - default is CONFIG_SYS_ADNPESC1_NIOS_APPL_ENTRY - -3. appl_end_addr - - - Nios application area end address (usually in Flash) - - will be used to unprotect/erase the Flash area while updating - - default is CONFIG_SYS_ADNPESC1_NIOS_APPL_END - -4. appl_ident_addr - - - address of the Nios application identification string - - this is the address checked-up by autoboot - - default is CONFIG_SYS_ADNPESC1_NIOS_APPL_IDENT - -5. appl_ident_str - - - the Nios application identification string itself - - default is CONFIG_SYS_ADNPESC1_NIOS_IDENTIFIER - -6. appl_name - - - name of file we have to download/update - - default is ADNPESC1/base32/linux.bin - -7. fs_base_addr - - - optionally file system area start address (usually in Flash) - - each file system we want to update will be copied to this address - - default is CONFIG_SYS_ADNPESC1_FILESYSTEM_BASE - -8. fs_end_addr - - - optionally file system area end address (usually in Flash) - - will be used to unprotect/erase the Flash area while updating - - default is CONFIG_SYS_ADNPESC1_FILESYSTEM_END - -9. fs_name - - - name of file we have to download/update - - default is ADNPESC1/base32/romfs.img |
