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diff --git a/board/freescale/mpc8641hpcn/README b/board/freescale/mpc8641hpcn/README new file mode 100644 index 0000000..d8fe0a4 --- /dev/null +++ b/board/freescale/mpc8641hpcn/README @@ -0,0 +1,186 @@ +Freescale MPC8641HPCN board +=========================== + +Created 05/24/2006 Haiying Wang +------------------------------- + +1. Building U-Boot +------------------ +The 86xx HPCN code base is known to compile using: + Binutils 2.15, Gcc 3.4.3, Glibc 2.3.3 + + $ make MPC8641HPCN_config + Configuring for MPC8641HPCN board... + + $ make + + +2. Switch and Jumper Setting +---------------------------- +Jumpers: + J14 Pins 1-2 (near plcc32 socket) + +Switches: + SW1(1-5) = 01100 CONFIG_SYS_COREPLL = 01000 :: CORE = 2:1 + 01100 :: CORE = 2.5:1 + 10000 :: CORE = 3:1 + 11100 :: CORE = 3.5:1 + 10100 :: CORE = 4:1 + 01110 :: CORE = 4.5:1 + SW1(6-8) = 001 CONFIG_SYS_SYSCLK = 000 :: SYSCLK = 33MHz + 001 :: SYSCLK = 40MHz + + SW2(1-4) = 1100 CONFIG_SYS_CCBPLL = 0010 :: 2X + 0100 :: 4X + 0110 :: 6X + 1000 :: 8X + 1010 :: 10X + 1100 :: 12X + 1110 :: 14X + 0000 :: 16X + SW2(5-8) = 1110 CONFIG_SYS_BOOTLOC = 1110 :: boot 16-bit localbus + + SW3(1-7) = 0011000 CONFIG_SYS_VID = 0011000 :: VCORE = 1.2V + 0100000 :: VCORE = 1.11V + SW3(8) = 0 VCC_PLAT = 0 :: VCC_PLAT = 1.2V + 1 :: VCC_PLAT = 1.0V + + SW4(1-2) = 11 CONFIG_SYS_HOSTMODE = 11 :: both prots host/root + SW4(3-4) = 11 CONFIG_SYS_BOOTSEQ = 11 :: no boot seq + SW4(5-8) = 0011 CONFIG_SYS_IOPORT = 0011 :: both PEX + + SW5(1) = 1 CONFIG_SYS_FLASHMAP = 1 :: boot from flash + 0 :: boot from PromJet + SW5(2) = 1 CONFIG_SYS_FLASHBANK = 1 :: swap upper/lower + halves (virtual banks) + 0 :: normal + SW5(3) = 0 CONFIG_SYS_FLASHWP = 0 :: not protected + SW5(4) = 0 CONFIG_SYS_PORTDIV = 1 :: 2:1 for PD4 + 1:1 for PD6 + SW5(5-6) = 11 CONFIG_SYS_PIXISOPT = 11 :: s/w determined + SW5(7-8) = 11 CONFIG_SYS_LADOPT = 11 :: s/w determined + + SW6(1) = 1 CONFIG_SYS_CPUBOOT = 1 :: no boot holdoff + SW6(2) = 1 CONFIG_SYS_BOOTADDR = 1 :: no traslation + SW6(3-5) = 000 CONFIG_SYS_REFCLKSEL = 000 :: 100MHZ + SW6(6) = 1 CONFIG_SYS_SERROM_ADDR= 1 :: + SW6(7) = 1 CONFIG_SYS_MEMDEBUG = 1 :: + SW6(8) = 1 CONFIG_SYS_DDRDEBUG = 1 :: + + SW8(1) = 1 ACZ_SYNC = 1 :: 48MHz on TP49 + SW8(2) = 1 ACB_SYNC = 1 :: THRMTRIP disabled + SW8(3) = 1 ACZ_SDOUT = 1 :: p4 mode + SW8(4) = 1 ACB_SDOUT = 1 :: PATA freq. = 133MHz + SW8(5) = 0 SUSLED = 0 :: SouthBridge Mode + SW8(6) = 0 SPREAD = 0 :: REFCLK SSCG Disabled + SW8(7) = 1 ACPWR = 1 :: non-battery + SW8(8) = 0 CONFIG_SYS_IDWP = 0 :: write enable + + +3. Flash U-Boot +--------------- +The flash range 0xEF800000 to 0xEFFFFFFF can be divided into 2 halves. +It is possible to use either half to boot using u-boot. Switch 5 bit 2 +is used for this purpose. + +0xEF800000 to 0xEFBFFFFF - 4MB +0xEFC00000 to 0xEFFFFFFF - 4MB +When this bit is 0, U-Boot is at 0xEFF00000. +When this bit is 1, U-Boot is at 0xEFB00000. + +Use the above mentioned flash commands to program the other half, and +use switch 5, bit 2 to alternate between the halves. Note: The booting +version of U-Boot will always be at 0xEFF00000. + +To Flash U-Boot into the booting bank (0xEFC00000 - 0xEFFFFFFF): + + tftp 1000000 u-boot.bin + protect off all + erase eff00000 +$filesize + cp.b 1000000 eff00000 $filesize + +or use tftpflash command: + run tftpflash + +To Flash U-boot into the alternative bank (0xEF800000 - 0xEFBFFFFF): + + tftp 1000000 u-boot.bin + erase efb00000 +$filesize + cp.b 1000000 efb00000 $filesize + + +4. Memory Map +------------- +NOTE: RIO and PCI are mutually exclusive, so they share an address + +For 32-bit u-boot, devices are mapped so that the virtual address == +the physical address, and the map looks liks this: + + Memory Range Device Size + ------------ ------ ---- + 0x0000_0000 0x7fff_ffff DDR 2G + 0x8000_0000 0x9fff_ffff RIO MEM 512M + 0x8000_0000 0x9fff_ffff PCI1/PEX1 MEM 512M + 0xa000_0000 0xbfff_ffff PCI2/PEX2 MEM 512M + 0xffe0_0000 0xffef_ffff CCSR 1M + 0xffdf_0000 0xffdf_7fff PIXIS 8K + 0xffdf_8000 0xffdf_ffff CF 8K + 0xf840_0000 0xf840_3fff Stack space 32K + 0xffc0_0000 0xffc0_ffff PCI1/PEX1 IO 64K + 0xffc1_0000 0xffc1_ffff PCI2/PEX2 IO 64K + 0xef80_0000 0xefff_ffff Flash 8M + +For 36-bit-enabled u-boot, the virtual map is the same as for 32-bit. +However, the physical map is altered to reside in 36-bit space, as follows. +Addresses are no longer mapped with VA == PA. All accesses from +software use the VA; the PA is only used for setting up windows +and mappings. Note that with the exception of PCI MEM and RIO, the low + 32 bits are the same as the VA above; only the top 4 bits vary: + + Memory Range Device Size + ------------ ------ ---- + 0x0_0000_0000 0x0_7fff_ffff DDR 2G + 0xc_0000_0000 0xc_1fff_ffff RIO MEM 512M + 0xc_0000_0000 0xc_1fff_ffff PCI1/PEX1 MEM 512M + 0xc_2000_0000 0xc_3fff_ffff PCI2/PEX2 MEM 512M + 0xf_ffe0_0000 0xf_ffef_ffff CCSR 1M + 0xf_ffdf_0000 0xf_ffdf_7fff PIXIS 8K + 0xf_ffdf_8000 0xf_ffdf_ffff CF 8K + 0x0_f840_0000 0xf_f840_3fff Stack space 32K + 0xf_ffc0_0000 0xf_ffc0_ffff PCI1/PEX1 IO 64K + 0xf_ffc1_0000 0xf_ffc1_ffff PCI2/PEX2 IO 64K + 0xf_ef80_0000 0xf_efff_ffff Flash 8M + +5. pixis_reset command +-------------------- +A new command, "pixis_reset", is introduced to reset mpc8641hpcn board +using the FPGA sequencer. When the board restarts, it has the option +of using either the current or alternate flash bank as the boot +image, with or without the watchdog timer enabled, and finally with +or without frequency changes. + +Usage is; + + pixis_reset + pixis_reset altbank + pixis_reset altbank wd + pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio> + pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio> + +Examples; + + /* reset to current bank, like "reset" command */ + pixis_reset + + /* reset board but use the to alternate flash bank */ + pixis_reset altbank + + /* reset board, use alternate flash bank with watchdog timer enabled*/ + pixis_reset altbank wd + + /* reset board to alternate bank with frequency changed. + * 40 is SYSCLK, 2.5 is COREPLL ratio, 10 is MPXPLL ratio + */ + pixis-reset altbank cf 40 2.5 10 + +Valid clock choices are in the 8641 Reference Manuals. |