X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=README;h=f7ab78a8bfbc34ecea1bdb9d2d41ce54b48d7d46;hb=9d80b49a671c9922931adcd823aab0ed319a42d1;hp=25cad2ff01962e0fb7a540773b0a028b08761181;hpb=2d221489df021393654805536be7effcb9d39702;p=oweals%2Fu-boot.git diff --git a/README b/README index 25cad2ff01..f7ab78a8bf 100644 --- a/README +++ b/README @@ -137,7 +137,6 @@ Directory Hierarchy: /arc Files generic to ARC architecture /arm Files generic to ARM architecture /avr32 Files generic to AVR32 architecture - /blackfin Files generic to Analog Devices Blackfin architecture /m68k Files generic to m68k architecture /microblaze Files generic to microblaze architecture /mips Files generic to MIPS architecture @@ -147,7 +146,6 @@ Directory Hierarchy: /powerpc Files generic to PowerPC architecture /sandbox Files generic to HW-independent "sandbox" /sh Files generic to SH architecture - /sparc Files generic to SPARC architecture /x86 Files generic to x86 architecture /api Machine/arch independent API for external apps /board Board dependent files @@ -376,15 +374,6 @@ The following options need to be configured: Defines the string to utilize when trying to match PCIe device tree nodes for the given platform. - CONFIG_SYS_PPC_E500_DEBUG_TLB - - Enables a temporary TLB entry to be used during boot to work - around limitations in e500v1 and e500v2 external debugger - support. This reduces the portions of the boot code where - breakpoints and single stepping do not work. The value of this - symbol should be set to the TLB1 entry to be used for this - purpose. - CONFIG_SYS_FSL_ERRATUM_A004510 Enables a workaround for erratum A004510. If set, @@ -513,6 +502,12 @@ The following options need to be configured: CONFIG_SYS_FSL_IFC_LE Defines the IFC controller register space as Little Endian + CONFIG_SYS_FSL_IFC_CLK_DIV + Defines divider of platform clock(clock input to IFC controller). + + CONFIG_SYS_FSL_LBC_CLK_DIV + Defines divider of platform clock(clock input to eLBC controller). + 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 @@ -595,29 +590,6 @@ The following options need to be configured: Select high exception vectors of the ARM core, e.g., do not clear the V bit of the c1 register of CP15. - CONFIG_SYS_THUMB_BUILD - - Use this flag to build U-Boot using the Thumb instruction - set for ARM architectures. Thumb instruction set provides - better code density. For ARM architectures that support - Thumb2 this flag will result in Thumb2 code generated by - GCC. - - CONFIG_ARM_ERRATA_716044 - CONFIG_ARM_ERRATA_742230 - CONFIG_ARM_ERRATA_743622 - CONFIG_ARM_ERRATA_751472 - CONFIG_ARM_ERRATA_761320 - CONFIG_ARM_ERRATA_773022 - CONFIG_ARM_ERRATA_774769 - CONFIG_ARM_ERRATA_794072 - - If set, the workarounds for these ARM errata are applied early - during U-Boot startup. Note that these options force the - workarounds to be applied; no CPU-type/version detection - exists, unlike the similar options in the Linux kernel. Do not - set these options unless they apply! - COUNTER_FREQUENCY Generic timer clock source frequency. @@ -626,15 +598,6 @@ The following options need to be configured: different from COUNTER_FREQUENCY, and can only be determined at run time. - NOTE: The following can be machine specific errata. These - do have ability to provide rudimentary version and machine - specific checks, but expect no product checks. - CONFIG_ARM_ERRATA_430973 - CONFIG_ARM_ERRATA_454179 - CONFIG_ARM_ERRATA_621766 - CONFIG_ARM_ERRATA_798870 - CONFIG_ARM_ERRATA_801819 - - Tegra SoC options: CONFIG_TEGRA_SUPPORT_NON_SECURE @@ -1466,9 +1429,6 @@ The following options need to be configured: CONFIG_SH_MMCIF_CLK Define the clock frequency for MMCIF - CONFIG_GENERIC_MMC - Enable the generic MMC driver - CONFIG_SUPPORT_EMMC_BOOT Enable some additional features of the eMMC boot partitions. @@ -1777,12 +1737,6 @@ The following options need to be configured: can be displayed via the splashscreen support or the bmp command. -- Do compressing for memory range: - CONFIG_CMD_ZIP - - If this option is set, it would use zlib deflate method - to compress the specified memory at its best effort. - - Compression support: CONFIG_GZIP @@ -2042,7 +1996,7 @@ The following options need to be configured: A byte containing the id of the VLAN. -- Status LED: CONFIG_STATUS_LED +- Status LED: CONFIG_LED_STATUS Several configurations allow to display the current status using a LED. For instance, the LED will blink @@ -2050,15 +2004,15 @@ The following options need to be configured: soon as a reply to a BOOTP request was received, and start blinking slow once the Linux kernel is running (supported by a status LED driver in the Linux - kernel). Defining CONFIG_STATUS_LED enables this + kernel). Defining CONFIG_LED_STATUS enables this feature in U-Boot. Additional options: - CONFIG_GPIO_LED + CONFIG_LED_STATUS_GPIO The status LED can be connected to a GPIO pin. In such cases, the gpio_led driver can be used as a - status LED backend implementation. Define CONFIG_GPIO_LED + status LED backend implementation. Define CONFIG_LED_STATUS_GPIO to include the gpio_led driver in the U-Boot binary. CONFIG_GPIO_LED_INVERTED_TABLE @@ -2792,19 +2746,6 @@ The following options need to be configured: this is instead controlled by the value of /config/load-environment. -- Parallel Flash support: - CONFIG_SYS_NO_FLASH - - Traditionally U-Boot was run on systems with parallel NOR - flash. This option is used to disable support for parallel NOR - flash. This option should be defined if the board does not have - parallel flash. - - If this option is not defined one of the generic flash drivers - (e.g. CONFIG_FLASH_CFI_DRIVER or CONFIG_ST_SMI) must be - selected or the board must provide an implementation of the - flash API (see include/flash.h). - - DataFlash Support: CONFIG_HAS_DATAFLASH @@ -2926,8 +2867,6 @@ The following options need to be configured: CONFIG_AT91SAM9XE enable special bootcounter support on at91sam9xe based boards. - CONFIG_BLACKFIN - enable special bootcounter support on blackfin based boards. CONFIG_SOC_DA8XX enable special bootcounter support on da850 based boards. CONFIG_BOOTCOUNT_RAM @@ -3304,10 +3243,6 @@ FIT uImage format: consider that a completely unreadable NAND block is bad, and thus should be skipped silently. - CONFIG_SPL_ABORT_ON_RAW_IMAGE - When defined, SPL will proceed to another boot method - if the image it has loaded does not have a signature. - CONFIG_SPL_RELOC_STACK Adress of the start of the stack SPL will use after relocation. If unspecified, this is equal to @@ -4593,12 +4528,6 @@ Low Level (hardware related) configuration options: addressable memory. This option causes some memory accesses to be mapped through map_sysmem() / unmap_sysmem(). -- CONFIG_USE_ARCH_MEMCPY - CONFIG_USE_ARCH_MEMSET - If these options are used a optimized version of memcpy/memset will - be used if available. These functions may be faster under some - conditions but may increase the binary size. - - CONFIG_X86_RESET_VECTOR If defined, the x86 reset vector code is included. This is not needed when U-Boot is running from Coreboot. @@ -5978,11 +5907,6 @@ For PowerPC, the following registers have specific use: average for all boards 752 bytes for the whole U-Boot image, 624 text + 127 data). -On Blackfin, the normal C ABI (except for P3) is followed as documented here: - http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface - - ==> U-Boot will use P3 to hold a pointer to the global data - On ARM, the following registers are used: R0: function argument word/integer result