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- SPEAr (Structured Processor Enhanced Architecture).
- SPEAr600 is also known as SPEArPlus and SPEAr300 is also known as SPEArBasic
- The SPEAr SoC family embeds a customizable logic that can be programmed
- one-time by a customer at silicon mask level (i.e. not at runtime!).
- U-Boot supports four SoCs: SPEAr600, SPEAr3xx
- All 4 SoCs (SPEAr3xx and SPEAr600) share common peripherals. SPEAr300 and
- SPEAr600 do not have EMI.
- 1. ARM926ejs core based (sp600 has two cores, the 2nd handled only in Linux)
- 2. FastEthernet (sp600 has Gbit version, but same controller - GMAC)
- 3. USB Host
- 4. USB Device
- 5. NAND controller (FSMC)
- 6. Serial NOR ctrl
- 7. I2C
- 8. SPI
- 9. CLCD
- 10. others ..
- Everything is supported in Linux.
- u-boot is currently not supporting all peripeharls (just a few as listed below).
- 1. USB Device
- 2. NAND controller (FSMC)
- 3. Serial Memory Interface
- 4. EMI (Parallel NOR interface)
- 4. I2C
- 5. UART
- Build options
- make spear320_config
- spear320 build with environment variables placed at default
- location i.e. Serial NOR device
- make spear320_pnor_config
- This option generates a uboot image that supports emi controller
- for CFI compliant parallel NOR flash. Environment variables are
- placed in Parallel NOR device
- make spear320_nand_config
- spear320 build with environment variables placed in NAND device
- make spear320_usbtty_config
- spear320 build with usbtty terminal as default and environment
- placed at default location
- make spear320_usbtty_pnor_config
- spear320 build with usbtty terminal as default and environment
- placed in pnor device
- make spear320_usbtty_nand_config
- Build with usbtty terminal as default and environment placed in
- NAND device
- make spear300_config
- make spear300_nand_config
- make spear300_usbtty_config
- make spear300_usbtty_nand_config
- make spear310_config
- make spear310_pnor_config
- make spear310_nand_config
- make spear310_usbtty_config
- make spear310_usbtty_pnor_config
- make spear310_usbtty_nand_config
- make spear600_config
- make spear600_nand_config
- make spear600_usbtty_config
- make spear600_usbtty_nand_config
- Mac id storage and retrieval in spear platforms
- Please read doc/README.enetaddr for the implementation guidelines for mac id
- usage. Basically, environment has precedence over board specific storage. The
- ethaddr beeing used for the network interface is always taken only from
- environment variables. Although, we can check the mac id programmed in i2c
- memory by using chip_config command
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