* Adds the "fdt" command
* The bootm command automatically updates the fdt
- OF_CPU - The proper name of the cpus node (only required for
- MPC512X and MPC5xxx based boards).
- OF_SOC - The proper name of the soc node (only required for
- MPC512X and MPC5xxx based boards).
OF_TBCLK - The timebase frequency.
OF_STDOUT_PATH - The path to the console device
Select one of the baudrates listed in
CONFIG_SYS_BAUDRATE_TABLE, see below.
-- Console Rx buffer length
- With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
- the maximum receive buffer length for the SMC.
- This option is actual only for 82xx possible.
- If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
- must be defined, to setup the maximum idle timeout for
- the SMC.
-
- Autoboot Command:
CONFIG_BOOTCOMMAND
Only needed when CONFIG_BOOTDELAY is enabled;
CONFIG_WATCHDOG
If this variable is defined, it enables watchdog
support for the SoC. There must be support in the SoC
- specific code for a watchdog. For the 8260
- CPUs, the SIU Watchdog feature is enabled in the SYPCR
- register. When supported for a specific SoC is
- available, then no further board specific code should
- be needed to use it.
+ specific code for a watchdog. When supported for a
+ specific SoC is available, then no further board specific
+ code should be needed to use it.
CONFIG_HW_WATCHDOG
When using a watchdog circuitry external to the used
- USB Support:
At the moment only the UHCI host controller is
- supported (PIP405, MIP405, MPC5200); define
+ supported (PIP405, MIP405); define
CONFIG_USB_UHCI to enable it.
define CONFIG_USB_KEYBOARD to enable the USB Keyboard
and define CONFIG_USB_STORAGE to enable the USB
Note:
Supported are USB Keyboards and USB Floppy drives
(TEAC FD-05PUB).
- MPC5200 USB requires additional defines:
- CONFIG_USB_CLOCK
- for 528 MHz Clock: 0x0001bbbb
- CONFIG_PSC3_USB
- for USB on PSC3
- CONFIG_USB_CONFIG
- for differential drivers: 0x00001000
- for single ended drivers: 0x00005000
- for differential drivers on PSC3: 0x00000100
- for single ended drivers on PSC3: 0x00004100
- CONFIG_SYS_USB_EVENT_POLL
- May be defined to allow interrupt polling
- instead of using asynchronous interrupts
CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the
txfilltuning field in the EHCI controller on reset.
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
- on those systems that support this (optional)
- feature.
-
- I2C Support: CONFIG_SYS_I2C
This enable the NEW i2c subsystem, and will allow you to use
eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL)
- I2C_PORT
-
- (Only for MPC8260 CPU). The I/O port to use (the code
- assumes both bits are on the same port). Valid values
- are 0..3 for ports A..D.
-
I2C_ACTIVE
The code necessary to make the I2C data line active
IVMS8, IVML24, SPD8xx,
HERMES, IP860, RPXlite, LWMON,
- FLAGADM, TQM8260
+ FLAGADM
- Access to physical memory region (> 4GB)
Some basic support is provided for operations on memory not
Define this option to include a destructive SPI flash
test ('sf test').
- 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 supports these type of connections.
-
- SystemACE Support:
CONFIG_SYSTEMACE
set. If this value is set, it must be set to the same value as
CONFIG_ENV_SIZE.
-- CONFIG_SYS_SPI_INIT_OFFSET
-
- Defines offset to the initial SPI buffer area in DPRAM. The
- area is used at an early stage (ROM part) if the environment
- is configured to reside in the SPI EEPROM: We need a 520 byte
- scratch DPRAM area. It is used between the two initialization
- calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems
- to be a good choice since it makes it far enough from the
- start of the data area as well as from the stack pointer.
-
Please note that the environment is read-only until the monitor
has been relocated to RAM and a RAM copy of the environment has been
created; also, when using EEPROM you will have to use getenv_f()
- CONFIG_SYS_CACHELINE_SIZE:
Cache Line Size of the CPU.
-- CONFIG_SYS_DEFAULT_IMMR:
- Default address of the IMMR after system reset.
-
- Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU,
- and RPXsuper) to be able to adjust the position of
- the IMMR register after a reset.
-
- CONFIG_SYS_CCSRBAR_DEFAULT:
Default (power-on reset) physical address of CCSR on Freescale
PowerPC SOCs.
Virtual address of CCSR. On a 32-bit build, this is typically
the same value as CONFIG_SYS_CCSRBAR_DEFAULT.
- CONFIG_SYS_DEFAULT_IMMR must also be set to this value,
- for cross-platform code that uses that macro instead.
-
- CONFIG_SYS_CCSRBAR_PHYS:
Physical address of CCSR. CCSR can be relocated to a new
physical address, if desired. In this case, this macro should
sequences.
U-Boot uses the following memory types:
- - MPC8260: IMMR (internal memory of the CPU)
- - MPC824X: data cache
- PPC4xx: data cache
- CONFIG_SYS_GBL_DATA_OFFSET:
point to an otherwise UNUSED address space between
the top of RAM and the start of the PCI space.
-- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6)
-
-- CONFIG_SYS_SYPCR: System Protection Control (11-9)
-
-- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26)
-
-- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31)
-
-- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30)
-
- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27)
- CONFIG_SYS_OR_TIMING_SDRAM:
- CONFIG_SYS_MAMR_PTA:
periodic timer for refresh
-- CONFIG_SYS_DER: Debug Event Register (37-47)
-
- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM,
CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP,
CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM,
CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM:
Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM)
-- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K,
- CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL:
- Machine Mode Register and Memory Periodic Timer
- Prescaler definitions (SDRAM timing)
-
-- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8260 only)
- Offset of the bootmode word in DPRAM used by post
- (Power On Self Tests). This definition overrides
- #define'd default value in commproc.h resp.
- cpm_8260.h.
-
-- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB,
- CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL,
- CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS,
- CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB,
- CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START,
- CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL,
- CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE,
- CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only)
- Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set.
-
- CONFIG_PCI_DISABLE_PCIE:
Disable PCI-Express on systems where it is supported but not
required.
To be able to re-map memory U-Boot then jumps to its link address.
To be able to implement the initialization code in C, a (small!)
initial stack is set up in the internal Dual Ported RAM (in case CPUs
-which provide such a feature like MPC8xx or MPC8260), or in a locked
-part of the data cache. After that, U-Boot initializes the CPU core,
-the caches and the SIU.
+which provide such a feature like), or in a locked part of the data
+cache. After that, U-Boot initializes the CPU core, the caches and
+the SIU.
Next, all (potentially) available memory banks are mapped using a
preliminary mapping. For example, we put them on 512 MB boundaries
projects / people / ms / u-boot.git / blobdiff