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diff --git a/board/freescale/mpc8536ds/README b/board/freescale/mpc8536ds/README deleted file mode 100644 index 2a38bd6dda..0000000000 --- a/board/freescale/mpc8536ds/README +++ /dev/null @@ -1,127 +0,0 @@ -Overview: -========= - -The MPC8536E integrates a PowerPC processor core with system logic -required for imaging, networking, and communications applications. - -Boot from NAND: -=============== - -The MPC8536E is capable of booting from NAND flash which uses the image -u-boot-nand.bin. This image contains two parts: a first stage image(also -call 4K NAND loader and a second stage image. The former is appended to -the latter to produce u-boot-nand.bin. - -The bootup process can be divided into two stages: the first stage will -configure the L2SRAM, then copy the second stage image to L2SRAM and jump -to it. The second stage image is to configure all the hardware and boot up -to U-Boot command line. - -The 4K NAND loader's code comes from the corresponding nand_spl directory, -along with the code twisted by CONFIG_NAND_SPL. The macro CONFIG_NAND_SPL -is mainly used to shrink the code size to the 4K size limitation. - -The macro CONFIG_SYS_RAMBOOT is used to control the code to produce the -second stage image. It's set in the board config file when boot from NAND -is selected. - -Build and boot steps --------------------- - -1. Building image - make MPC8536DS_NAND_config - make CROSS_COMPILE=powerpc-none-linux-gnuspe- all - -2. Change dip-switch - SW2[5-8] = 1011 - SW9[1-3] = 101 - Note: 1 stands for 'on', 0 stands for 'off' - -3. Flash image - tftp 1000000 u-boot-nand.bin - nand erase 0 a0000 - nand write 1000000 0 a0000 - -Boot from On-chip ROM: -====================== - -The MPC8536E is capable of booting from the on-chip ROM - boot from eSDHC -and boot from eSPI. When power on, the porcessor excutes the ROM code to -initialize the eSPI/eSDHC controller, and loads the mian U-Boot image from -the memory device that interfaced to the controller, such as the SDCard or -SPI EEPROM, to the target memory, e.g. SDRAM or L2SRAM, then boot from it. - -The memory device should contain a specific data structure with control word -and config word at the fixed address. The config word direct the process how -to config the memory device, and the control word direct the processor where -to find the image on the memory device, or where copy the main image to. The -user can use any method to store the data structure to the memory device, only -if store it on the assigned address. - -Build and boot steps --------------------- - -For boot from eSDHC: -1. Build image - make MPC8536DS_SDCARD_config - make CROSS_COMPILE=powerpc-none-linux-gnuspe- all - -2. Change dip-switch - SW2[5-8] = 0111 - SW3[1] = 0 - SW8[7] = 0 - The on-board SD/MMC slot is active - SW8[7] = 1 - The externel SD/MMC slot is active - -3. Put image to SDCard - Put the follwing info at the assigned address on the SDCard: - - Offset | Data | Description - -------------------------------------------------------- - | 0x40-0x43 | 0x424F4F54 | BOOT signature | - -------------------------------------------------------- - | 0x48-0x4B | 0x00080000 | u-boot.bin's size | - -------------------------------------------------------- - | 0x50-0x53 | 0x???????? | u-boot.bin's Addr on SDCard | - -------------------------------------------------------- - | 0x58-0x5B | 0xF8F80000 | Target Address | - ------------------------------------------------------- - | 0x60-0x63 | 0xF8FFF000 | Execution Starting Address | - -------------------------------------------------------- - | 0x68-0x6B | 0x6 | Number of Config Addr/Data | - -------------------------------------------------------- - | 0x80-0x83 | 0xFF720100 | Config Addr 1 | - | 0x84-0x87 | 0xF8F80000 | Config Data 1 | - -------------------------------------------------------- - | 0x88-0x8b | 0xFF720e44 | Config Addr 2 | - | 0x8c-0x8f | 0x0000000C | Config Data 2 | - -------------------------------------------------------- - | 0x90-0x93 | 0xFF720000 | Config Addr 3 | - | 0x94-0x97 | 0x80010000 | Config Data 3 | - -------------------------------------------------------- - | 0x98-0x9b | 0xFF72e40c | Config Addr 4 | - | 0x9c-0x9f | 0x00000040 | Config Data 4 | - -------------------------------------------------------- - | 0xa0-0xa3 | 0x40000001 | Config Addr 5 | - | 0xa4-0xa7 | 0x00000100 | Config Data 5 | - -------------------------------------------------------- - | 0xa8-0xab | 0x80000001 | Config Addr 6 | - | 0xac-0xaf | 0x80000001 | Config Data 6 | - -------------------------------------------------------- - | ...... | - -------------------------------------------------------- - | 0x???????? | u-boot.bin | - -------------------------------------------------------- - - then insert the SDCard to the active slot to boot up. - -For boot from eSPI: -1. Build image - make MPC8536DS_SPIFLASH_config - make CROSS_COMPILE=powerpc-none-linux-gnuspe- all - -2. Change dip-switch - SW2[5-8] = 0110 - -3. Put image to SPI flash - Put the info in the above table onto the SPI flash, then - boot up. |