| Vipin KUMAR | 439fea0 | 2010-01-15 19:15:42 +0530 | [diff] [blame] | 1 | |
| 2 | SPEAr (Structured Processor Enhanced Architecture). |
| 3 | |
| 4 | SPEAr600 is also known as SPEArPlus and SPEAr300 is also known as SPEArBasic |
| 5 | |
| 6 | The SPEAr SoC family embeds a customizable logic that can be programmed |
| 7 | one-time by a customer at silicon mask level (i.e. not at runtime!). |
| 8 | |
| Vipin KUMAR | 0c93dec | 2012-05-07 13:06:46 +0530 | [diff] [blame] | 9 | U-Boot supports four SoCs: SPEAr600, SPEAr3xx |
| Vipin KUMAR | 439fea0 | 2010-01-15 19:15:42 +0530 | [diff] [blame] | 10 | |
| Vipin KUMAR | 0c93dec | 2012-05-07 13:06:46 +0530 | [diff] [blame] | 11 | All 4 SoCs (SPEAr3xx and SPEAr600) share common peripherals. SPEAr300 and |
| 12 | SPEAr600 do not have EMI. |
| Vipin KUMAR | 439fea0 | 2010-01-15 19:15:42 +0530 | [diff] [blame] | 13 | |
| 14 | 1. ARM926ejs core based (sp600 has two cores, the 2nd handled only in Linux) |
| 15 | 2. FastEthernet (sp600 has Gbit version, but same controller - GMAC) |
| 16 | 3. USB Host |
| 17 | 4. USB Device |
| 18 | 5. NAND controller (FSMC) |
| 19 | 6. Serial NOR ctrl |
| 20 | 7. I2C |
| 21 | 8. SPI |
| 22 | 9. CLCD |
| 23 | 10. others .. |
| 24 | |
| 25 | Everything is supported in Linux. |
| Vipin KUMAR | 0c93dec | 2012-05-07 13:06:46 +0530 | [diff] [blame] | 26 | u-boot is currently not supporting all peripeharls (just a few as listed below). |
| Vipin KUMAR | 439fea0 | 2010-01-15 19:15:42 +0530 | [diff] [blame] | 27 | 1. USB Device |
| 28 | 2. NAND controller (FSMC) |
| 29 | 3. Serial Memory Interface |
| 30 | 4. EMI (Parallel NOR interface) |
| 31 | 4. I2C |
| 32 | 5. UART |
| 33 | |
| 34 | Build options |
| Vipin KUMAR | 0c93dec | 2012-05-07 13:06:46 +0530 | [diff] [blame] | 35 | make spear320_config |
| 36 | spear320 build with environment variables placed at default |
| 37 | location i.e. Serial NOR device |
| 38 | make spear320_pnor_config |
| 39 | This option generates a uboot image that supports emi controller |
| 40 | for CFI compliant parallel NOR flash. Environment variables are |
| 41 | placed in Parallel NOR device |
| 42 | make spear320_nand_config |
| 43 | spear320 build with environment variables placed in NAND device |
| 44 | make spear320_usbtty_config |
| 45 | spear320 build with usbtty terminal as default and environment |
| 46 | placed at default location |
| 47 | make spear320_usbtty_pnor_config |
| 48 | spear320 build with usbtty terminal as default and environment |
| 49 | placed in pnor device |
| 50 | make spear320_usbtty_nand_config |
| 51 | Build with usbtty terminal as default and environment placed in |
| 52 | NAND device |
| Vipin KUMAR | 439fea0 | 2010-01-15 19:15:42 +0530 | [diff] [blame] | 53 | make spear300_config |
| Vipin KUMAR | 0c93dec | 2012-05-07 13:06:46 +0530 | [diff] [blame] | 54 | make spear300_nand_config |
| 55 | make spear300_usbtty_config |
| 56 | make spear300_usbtty_nand_config |
| Vipin KUMAR | 439fea0 | 2010-01-15 19:15:42 +0530 | [diff] [blame] | 57 | make spear310_config |
| Vipin KUMAR | 0c93dec | 2012-05-07 13:06:46 +0530 | [diff] [blame] | 58 | make spear310_pnor_config |
| 59 | make spear310_nand_config |
| 60 | make spear310_usbtty_config |
| 61 | make spear310_usbtty_pnor_config |
| 62 | make spear310_usbtty_nand_config |
| 63 | make spear600_config |
| 64 | make spear600_nand_config |
| 65 | make spear600_usbtty_config |
| 66 | make spear600_usbtty_nand_config |
| Vipin KUMAR | f6b5678 | 2012-05-07 13:06:41 +0530 | [diff] [blame] | 67 | |
| 68 | Mac id storage and retrieval in spear platforms |
| 69 | |
| 70 | Please read doc/README.enetaddr for the implementation guidelines for mac id |
| 71 | usage. Basically, environment has precedence over board specific storage. The |
| 72 | ethaddr beeing used for the network interface is always taken only from |
| 73 | environment variables. Although, we can check the mac id programmed in i2c |
| 74 | memory by using chip_config command |