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README.spear contains information about SPEAr architecture and build options etc Signed-off-by: Vipin <vipin.kumar@st.com>
48 lines
1.3 KiB
Text
48 lines
1.3 KiB
Text
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SPEAr (Structured Processor Enhanced Architecture).
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SPEAr600 is also known as SPEArPlus and SPEAr300 is also known as SPEArBasic
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The SPEAr SoC family embeds a customizable logic that can be programmed
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one-time by a customer at silicon mask level (i.e. not at runtime!).
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We are now adding the support in u-boot for two SoC: SPEAr600 and SPEAr3xx.
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All 4 SoCs share common peripherals.
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1. ARM926ejs core based (sp600 has two cores, the 2nd handled only in Linux)
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2. FastEthernet (sp600 has Gbit version, but same controller - GMAC)
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3. USB Host
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4. USB Device
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5. NAND controller (FSMC)
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6. Serial NOR ctrl
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7. I2C
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8. SPI
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9. CLCD
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10. others ..
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Everything is supported in Linux.
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u-boot is not currently supporting all peripeharls (just a few as listed below).
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1. USB Device
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2. NAND controller (FSMC)
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3. Serial Memory Interface
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4. EMI (Parallel NOR interface)
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4. I2C
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5. UART
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Build options
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make spear600_config
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make spear300_config
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make spear310_config
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make spear320_config
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Further options
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make ENV=NAND (supported by all 4 SoCs)
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- This option generates a uboot image that saves environment inn NAND
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make CONSOLE=USB (supported by all 4 SoCs)
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- This option generates a uboot image for using usbdevice as a tty i/f
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make FLASH=PNOR (supported by SPEAr310 and SPEAr320)
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- This option generates a uboot image that supports emi controller for
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CFI compliant parallel NOR flash
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