X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=README;h=fe48ccd292ed0ca0d87e3a2dbf4cc04b636d75af;hb=f763be224fa78893384416734419d8e052c1c5ef;hp=7b393b79b34c8ffcaf272f23c7259f15a75585a9;hpb=1df7bbba24b5f8f97331e30066358b7ab97ff1df;p=platform%2Fkernel%2Fu-boot.git diff --git a/README b/README index 7b393b7..fe48ccd 100644 --- a/README +++ b/README @@ -423,9 +423,10 @@ The following options need to be configured: CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT This value denotes start offset of DSP CCSR space. - CONFIG_SYS_FSL_DDR_EMU - Specify emulator support for DDR. Some DDR features such as - deskew training are not available. + CONFIG_SYS_FSL_SINGLE_SOURCE_CLK + Single Source Clock is clocking mode present in some of FSL SoC's. + In this mode, a single differential clock is used to supply + clocks to the sysclock, ddrclock and usbclock. - Generic CPU options: CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN @@ -433,6 +434,59 @@ The following options need to be configured: Defines the endianess of the CPU. Implementation of those values is arch specific. + CONFIG_SYS_FSL_DDR + Freescale DDR driver in use. This type of DDR controller is + found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core + SoCs. + + CONFIG_SYS_FSL_DDR_ADDR + Freescale DDR memory-mapped register base. + + CONFIG_SYS_FSL_DDR_EMU + Specify emulator support for DDR. Some DDR features such as + deskew training are not available. + + CONFIG_SYS_FSL_DDRC_GEN1 + Freescale DDR1 controller. + + CONFIG_SYS_FSL_DDRC_GEN2 + Freescale DDR2 controller. + + CONFIG_SYS_FSL_DDRC_GEN3 + Freescale DDR3 controller. + + CONFIG_SYS_FSL_DDRC_ARM_GEN3 + Freescale DDR3 controller for ARM-based SoCs. + + CONFIG_SYS_FSL_DDR1 + Board config to use DDR1. It can be enabled for SoCs with + Freescale DDR1 or DDR2 controllers, depending on the board + implemetation. + + CONFIG_SYS_FSL_DDR2 + Board config to use DDR2. It can be eanbeld for SoCs with + Freescale DDR2 or DDR3 controllers, depending on the board + implementation. + + CONFIG_SYS_FSL_DDR3 + Board config to use DDR3. It can be enabled for SoCs with + Freescale DDR3 controllers. + + CONFIG_SYS_FSL_IFC_BE + Defines the IFC controller register space as Big Endian + + CONFIG_SYS_FSL_IFC_LE + Defines the IFC controller register space as Little Endian + + CONFIG_SYS_FSL_PBL_PBI + It enables addition of RCW (Power on reset configuration) in built image. + Please refer doc/README.pblimage for more details + + CONFIG_SYS_FSL_PBL_RCW + It adds PBI(pre-boot instructions) commands in u-boot build image. + PBI commands can be used to configure SoC before it starts the execution. + Please refer doc/README.pblimage for more details + - Intel Monahans options: CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO @@ -784,6 +838,22 @@ The following options need to be configured: as a convenience, when switching between booting from RAM and NFS. +- Bootcount: + CONFIG_BOOTCOUNT_LIMIT + Implements a mechanism for detecting a repeating reboot + cycle, see: + http://www.denx.de/wiki/view/DULG/UBootBootCountLimit + + CONFIG_BOOTCOUNT_ENV + If no softreset save registers are found on the hardware + "bootcount" is stored in the environment. To prevent a + saveenv on all reboots, the environment variable + "upgrade_available" is used. If "upgrade_available" is + 0, "bootcount" is always 0, if "upgrade_available" is + 1 "bootcount" is incremented in the environment. + So the Userspace Applikation must set the "upgrade_available" + and "bootcount" variable to 0, if a boot was successfully. + - Pre-Boot Commands: CONFIG_PREBOOT @@ -832,6 +902,7 @@ The following options need to be configured: CONFIG_CMD_BSP * Board specific commands CONFIG_CMD_BOOTD bootd CONFIG_CMD_CACHE * icache, dcache + CONFIG_CMD_CLK * clock command support CONFIG_CMD_CONSOLE coninfo CONFIG_CMD_CRC32 * crc32 CONFIG_CMD_DATE * support for RTC, date/time... @@ -1971,6 +2042,13 @@ CBFS (Coreboot Filesystem) support status LED backend implementation. Define CONFIG_GPIO_LED to include the gpio_led driver in the U-Boot binary. + CONFIG_GPIO_LED_INVERTED_TABLE + Some GPIO connected LEDs may have inverted polarity in which + case the GPIO high value corresponds to LED off state and + GPIO low value corresponds to LED on state. + In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined + with a list of GPIO LEDs that have inverted polarity. + - CAN Support: CONFIG_CAN_DRIVER Defining CONFIG_CAN_DRIVER enables CAN driver support @@ -2084,6 +2162,12 @@ CBFS (Coreboot Filesystem) support - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr + - drivers/i2c/s3c24x0_i2c.c: + - activate this driver with CONFIG_SYS_I2C_S3C24X0 + - This driver adds i2c buses (11 for Exynos5250, Exynos5420 + 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) + with a fix speed from 100000 and the slave addr 0! + additional defines: CONFIG_SYS_NUM_I2C_BUSES @@ -2688,6 +2772,12 @@ CBFS (Coreboot Filesystem) support Define this option to use the Bank addr/Extended addr support on SPI flashes which has size > 16Mbytes. + CONFIG_SF_DUAL_FLASH Dual flash memories + + Define this option to use dual flash support where two flash + memories can be connected with a given cs line. + currently Xilinx Zynq qspi support these type of connections. + - SystemACE Support: CONFIG_SYSTEMACE @@ -3190,7 +3280,7 @@ FIT uImage format: CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT Set for the SPL on PPC mpc8xxx targets, support for - arch/powerpc/cpu/mpc8xxx/ddr/libddr.o in SPL binary. + drivers/ddr/fsl/libddr.o in SPL binary. CONFIG_SPL_COMMON_INIT_DDR Set for common ddr init with serial presence detect in @@ -3204,6 +3294,9 @@ FIT uImage format: Defines the size and behavior of the NAND that SPL uses to read U-Boot + CONFIG_SPL_NAND_BOOT + Add support NAND boot + CONFIG_SYS_NAND_U_BOOT_OFFS Location in NAND to read U-Boot from @@ -4347,6 +4440,9 @@ Low Level (hardware related) configuration options: NOTE : currently only supported on AM335x platforms. +- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: + Enables the RTC32K OSC on AM33xx based plattforms + Freescale QE/FMAN Firmware Support: ----------------------------------- @@ -5186,6 +5282,15 @@ when your kernel is intended to use an initial ramdisk: Load Address: 0x00000000 Entry Point: 0x00000000 +The "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" +option performs the converse operation of the mkimage's second form (the "-d" +option). Given an image built by mkimage, the dumpimage extracts a "data file" +from the image: + + tools/dumpimage -i image -p position data_file + -i ==> extract from the 'image' a specific 'data_file', \ + indexed by 'position' + Installing a Linux Image: -------------------------