## EM86XX boot loader change log#v0.1.0 : 12/10/2002     Supports UART and simple boot menuv0.2.0 : 01/27/2003    Compatible with MAMBO uClinux kernel    Supports various method of booting (direct, romfs, initrd)    Supports downloading image via serialv0.3.0 : 02/04/2003    Supports serial flash erase/programming    Create another bootloader for serial flash (standalone)v0.3.1 : 02/06/2003    Reserve 0x04 - 0x3f area in the boot loader for serial flash for configuration area    PLL, and other DRAM settings locate starting from offset 0x10 (file offset : 0x14)v0.3.2 : 02/10/2003    Connects FlexROM III via Peripheral Bus CS#2, and supports booting from FlexROM.     I guess also Parallel Flash work. v0.4.0 : 02/10/2003    Supports PCI host functionalityv0.4.1 : 02/13/2003    PCI test v0.4.2 : 02/20/2003    PCI code reorganized.     pci scan/select/info/(test) submenu    for release version (CONFIG_RELEASE), supports CONFIG_BOOTFROM_xxx configurationv0.5.0 : 03/24/2003    IDE support    Supports booting from IDE    Basic MAMBO primitive functions : interrupt, MBUS, switchboxv0.5.1 : 03/24/2003    separate each serial flash drive (ST : sflash-st.c)v0.5.2 : 03/24/2003    Supports parallel flash (through Common Flash Interface)    Flash codes are ported from Jasper boot loader, and not tested under Mambov0.5.3 : 04/01/2003    IDE DMA transferv0.5.4 : 04/03/2003    PCI DMA transfer test    cache control v0.5.5 : 04/08/2003    data restore after flash probing    flush cache after boot    disable cache for host area in developement versionv0.5.6 : 04/16/2003    disable data cache before booting kernel    setup r0, r1 before jumping to kernelv0.5.7 : 04/19/2003    config cache <on|off>v0.6.0 : 04/22/2003    Serial flash support : SST 25VF512    'MAMB' signaturev0.6.1 : 04/24/2003    Confirmed booting from IDE (for HP)        Disabled multi-mode. I'm not sure it's working. v0.6.2 : 04/24/2003    Serial flash support : SST 25VF512/010/020/040v0.6.3 : 04/28/2003    Reorganized configuration area. Assign 0x60 bytes for configuration    Transfer configuration data from serial flash area to DRAM area    Make bootsflash to be consistent with boot loader configuration area    Check file size and copy only needed part of boot loaderv0.6.4 : 05/02/2003    Implemented IDE multi-mode writing. Enabled multi-mode    Added IDE test function.v0.6.5 : 05/07/2003    Detects bootable image in IDE device    Added bootflag to configuration area        boot depends on bootflagv0.6.6 05/14/2003    Reserved 512 bytes for stage 0 boot loader    Merged stage 0 boot loaders to loader-stage0.S    Tested stage 0 boot loader for parallel flash    Every changes are made to loader-stage0.Sv0.6.7 05/21/2003    Maps GPIO 6 to IRQ for IDE interruptv0.7.0 06/03/2003    "download serial [target] gz command" for which allows downloading gzipped image    flash support : 8 bits data lines    make it possible to enable or disable each function groups (SFLASH FLASH IDE PCI NET)    on the way of porting NE2000 PCI device driver    IRQ supportv0.7.1 06/06/2003    Adjust the heap location for inflate() function. Currently loader uses 8MB of    memory and the actual memory size is bigger than 8MB, it uses the memory from    8MB for heap.v0.7.2 06/10/2003    Move MAMBO_DRAMBASE definition to version.h which is automatically generated by Makefilev0.7.3 06/19/2003    Distinguish booting from serial flash and parallel flashv0.7.4 06/25/2003    Added delay cycle while writing image into SST-series serial flash for safety    Check signature before writing boot loader image into serial / parallel flash    Reduced delay while burning flash    Make use of unlock bypass programming even MaxBufSize = 0. Tested with AM29LV3200.    Even transferring 64KB by bypassing mode is OK. default = 4KB (2^12 bytes)    v0.7.5 07/11/2003    Changed the serial flash timing : 0x0e => 0x0f    Moved default configuration parameters to config.h     Generate another binary with initialization-only boot loader (tried to make it     smaller than 512 bytes). It includes every initialization needed by Mambo kernel    "info romfs" command    do not check "IDE device READY" while probing IDE bus. CD-ROM is not ready at boot timev0.8.0 : 08/15/2003    CONFIG_ENABLE_FULLFUNCTION : To removed not frequently used functions by default.     CONFIG_ENABLE_PCIPB : PCI through FPGA by Northwest Logic    shortcut / batch commands    Do not initialize DRAM 1 controller if the parameter is 0    fixed inflate() hang problem : when the unzipped image is bigger than 1MB    "info sflash/pb/dram" command    DRAM base address has moved to 0x11000000 by default    UART configurations have moved from uart.h to Makefile (DEFAULT_UART_xxx)    TESTLOADERONRAM configuration has moved from config.h to Makefile    "ide test all" command to test IDE interface. fixed MBUS transfer address mask    PCI FPGA has been tested (not DMA mode transfer)v0.8.1 : 08/20/2003    support DEL as BS    "ppci test config" has been moved to pci common testv0.8.2 : 08/20/2003    configvalid field is introduced to configuration space.     If the appropriate bit is not set, PCI configuration is not updated.    EM86xx Rev B has different Revision ID (2), and it prevent from the data is overwritten    burnsflash is also modified to support this configvalid bitsv0.8.3 : 09/12/2003    do not invalidate cache for the address space lower than 256MB    Mambo PCI : select() function writes just needed bytes        for compatibility with Rev B        PCI scan will work better on Rev B    boot command can specify kernel base address    Maintains multiple kernel image in one partitionv0.8.4 : 09/23/2003    write back cache control    fix boot_ide() bug0.8.5 : 09/29/2003    setup Mambo as PCI slave to support PCI bus mastering    fix base address in devices' configuration space    support virt_to_bus and bus_to_virt function    move TX sk_buff to BSS which resides in DMAable memory    fix timer 0 (divice by 512 not by 256)    rename function names starting with pcihost_ with pcimambo_0.9.0 : 10/14/2003    New cache setting : 2GB non-cached, 2GB cached    Moved DRAMBASE to 0x91000000    Define new LOADER_DRAMBASE to 0x91a00000    Removed CRs from loader.S    "sflash force" command    Checks image size before flashing (serial flash / parallel flash)    Read partition table when it probes drive    Has separate configuration file for each boards or vendor     If the configuration file (.config) is not found, copy from default configuration (defconfig)    Also Makefile support user configuration file through "CONFIG=" option at command line    Clears BSS section at bootup    Moved unnecessary functions under "CONFIG_ENABLE_FULLFUNCTION"    PCI / flash / sflash code cleanup    Removed unnecessary memset() because the BSS was not cleared    Gathered all the necessary initialization code to mambo_init()    New memory map is adapted to remove 64KB size limitation of boot loader        0x91000000 : vector table        0x91000000 - 0x91800000 : various image        0x91800000 - 0x91a00000 : heap for inflate()        0x91a00000 - 0x92000000 : boot loader, heap, stack0.9.1 : 10/16/2003    Disable instruction cache for regions below 2GB    Set timeout to 1 second. Some legacy HDD needs time to get stable after        setting transfer mode.    pci_init() passes correct PCI structure depending on configuration0.9.2 : 10/24/2003    Have ENABLE_SFLASH_ST and ENABLE_SFLASH_SST configuration    Added DRAM size information in the configuration. defconfig is changed.    Kernel parameter passing through reserved memory area        0x91000100 - 0x91000200 (256 bytes)        Only pass command line tag.        "config cmd" option for specifying command line parameter    loader.bin memory map :        0x00 - 0x20 : ARM vector table        0x20 - 0x40 : ARM vector jump addresses        0x40 - 0xa0 : configuration from stage 0 boot loader        0xa0 - 0x100 : reserved        0x100 - 0x200 : kernel parameterv0.9.3 : 10/30/2003    Added board specific header files : board        board-generic : generic Sigma Designs' boards    Added rtl81xx.c. It has only skeleton of RTL81xx ethernet driverv0.9.4 : 11/10/2003    serial flash M25P05 and M25P10 supports 128 bytes of page program.         M25P40 supports 256 bytes. Set PAGEPROGRAM size to 128 (before 256)    supports ST M95xxx serial flashes        renamed sflash-st.c to sflash-st-m25.c        newly created sflash-st-m95.c for M95xxx series    Renamed :         pcihost.* => pcimambo.*    supports "Production Support"        Stage 0 Test : Run directly on ROM (serial or parallel flash)            use Mambo internal memory for stack purpose            DRAM test : Data Line / Address Line / Entire Memory        Stage 1 Test : Run after initialization is done            Checksum : checksum is 2's complement of the sum of the image                ignore first 4 bytes of serial flash image (signature)        Support board specific test        make PRODUCTIONTEST=yv0.9.5 : 11/17/2003    Fix the production test bug : it referred to configuration in RAM not ROM    Reimplementation of 'vsprintf' from scratch (about 1000 bytes but much smaller