Add the README.mpc837xemds to /doc
Signed-off-by: Dave Liu daveliu@freescale.com --- doc/README.mpc837xemds | 104 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 104 insertions(+), 0 deletions(-) create mode 100644 doc/README.mpc837xemds
diff --git a/doc/README.mpc837xemds b/doc/README.mpc837xemds new file mode 100644 index 0000000..3f0cdf7 --- /dev/null +++ b/doc/README.mpc837xemds @@ -0,0 +1,104 @@ +Freescale MPC837xEMDS Board +----------------------------------------- +1. Board Switches and Jumpers +1.0 There are four Dual-In-Line Packages(DIP) Switches on MPC837xEMDS board + For some reason, the HW designers describe the switch settings + in terms of 0 and 1, and then map that to physical switches where + the label "On" refers to logic 0 and "Off" is logic 1. + + Switch bits are numbered 1 through, like, 4 6 8 or 10, but the + bits may contribute to signals that are numbered based at 0, + and some of those signals may be high-bit-number-0 too. Heed + well the names and labels and do not get confused. + + "Off" == 1 + "On" == 0 + + SW4[8] is the bit labled 8 on Switch 4. + SW2[1:6] refers to bits labeled 1 through 6 in order on switch 2. + SW2[1:8]= 0000_0001 refers to bits labeled 1 through 7 is set as "On" + and bits labeled 8 is set as "Off". + +1.1 For the MPC837xEMDS Processor Board + + First, make sure the board default setting is consistent with the + document shipped with your board. Then apply the following setting: + SW3[1-8]= 0011_0000 (BOOTSEQ, ROMLOC setting) + SW4[1-8]= 0000_0110 (core PLL setting) + SW5[1-8]= 1001_1000 (system PLL, boot up from low end of flash) + SW6[1-8]= 0000_1000 (HRCW is read from NOR FLASH) + SW7[1-8]= 0110_1101 (TSEC1/2 interface setting - RGMII) + J3 2-3, TSEC1 LVDD1 with 2.5V + J6 2-3, TSEC2 LVDD2 with 2.5V + J9 2-3, CLKIN from osc on board + J10 removed, CS0 connect to NOR flash; when mounted, CS0 connect to NAND + J11 removed, Hardware Reset Configuration Word load from FLASH(NOR or NAND) + mounted, HRCW load from BCSR. + + on board Oscillator: 66M + +2. Memory Map + +2.1. The memory map should look pretty much like this: + + 0x0000_0000 0x7fff_ffff DDR 2G + 0x8000_0000 0x8fff_ffff PCI MEM prefetch 256M + 0x9000_0000 0x9fff_ffff PCI MEM non-prefetch 256M + 0xc000_0000 0xdfff_ffff Empty 512M + 0xe000_0000 0xe00f_ffff Int Mem Reg Space 1M + 0xe010_0000 0xe02f_ffff Empty 2M + 0xe030_0000 0xe03f_ffff PCI IO 1M + 0xe040_0000 0xe05f_ffff Empty 2M + 0xe060_0000 0xe060_8000 NAND Flash 32K + 0xf400_0000 0xf7ff_ffff Empty 64M + 0xf800_0000 0xf800_7fff BCSR on CS1 32K + 0xfe00_0000 0xffff_ffff NOR Flash on CS0 32M + +3. Definitions + +3.1 Explanation of NEW definitions in: + + include/configs/MPC837XEMDS.h + + CONFIG_MPC83XX MPC83xx family for both MPC837x and MPC8360 + CONFIG_MPC837X MPC837x specific + CONFIG_MPC837XEMDS MPC837XEMDS board specific + +4. Compilation + + Assuming you're using BASH shell: + + export CROSS_COMPILE=your-cross-compile-prefix + cd u-boot + make distclean + make MPC837XEMDS_config + make + +5. Downloading and Flashing Images + +5.0 Download over serial line using Kermit: + + loadb + [Drop to kermit: + ^\c + send <u-boot-bin-image> + c + ] + + + Or via tftp: + + tftp 40000 u-boot.bin + +5.1 Reflash U-boot Image using U-boot + + tftp 40000 u-boot.bin + protect off fe000000 fe1fffff + erase fe000000 fe1fffff + + cp.b 40000 fe000000 xxxx + +You have to supply the correct byte count with 'xxxx' from the TFTP result log. + +6. Notes + 1) The console baudrate for MPC837XEMDS is 115200bps.