| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | |
| 2 | U-Boot for Renesas SuperH |
| 3 | Last update 01/18/2008 by Nobuhiro Iwamatsu |
| 4 | |
| 5 | ================================================================================ |
| 6 | 0. What's this? |
| 7 | This file contains status information for the port of U-Boot to the |
| 8 | Renesas SuperH series of CPUs. |
| 9 | |
| 10 | ================================================================================ |
| 11 | 1. Overview |
| 12 | SuperH has an original boot loader. However, source code is dirty, and |
| 13 | maintenance is not done. |
| 14 | To improve sharing and the maintenance of the code, Nobuhiro Iwamatsu |
| 15 | started the porting to u-boot in 2007. |
| 16 | |
| 17 | ================================================================================ |
| 18 | 2. Supported CPUs |
| 19 | |
| 20 | 2.1. Renesas SH7750/SH7750R |
| 21 | This CPU has the SH4 core. |
| 22 | |
| 23 | 2.2. Renesas SH7722 |
| 24 | This CPU has the SH4AL-DSP core. |
| 25 | |
| 26 | 2.3. Renesas SH7720 |
| 27 | This CPU has the SH3 core. |
| 28 | |
| 29 | 2.4. Renesas SH7710/SH7712 |
| 30 | This CPU has the SH3-DSP core and Ethernet controller. |
| 31 | |
| 32 | 2.5. Renesas SH7780 |
| 33 | This CPU has the SH4A core. |
| 34 | |
| 35 | ================================================================================ |
| 36 | 3. Supported Boards |
| 37 | |
| 38 | 3.1. Hitachi UL MS7750SE01/MS7750RSE01 |
| 39 | Board specific code is in board/ms7750se |
| 40 | To use this board, type "make ms7750se_config". |
| 41 | Support devices are : |
| 42 | - SCIF |
| 43 | - SDRAM |
| 44 | - NOR Flash |
| 45 | - Marubun PCMCIA |
| 46 | |
| 47 | 3.2. Hitachi UL MS7722SE01 |
| 48 | Board specific code is in board/ms7722se |
| 49 | To use this board, type "make ms7722se_config". |
| 50 | Support devices are : |
| 51 | - SCIF |
| 52 | - SDRAM |
| 53 | - NOR Flash |
| 54 | - Marubun PCMCIA |
| 55 | - SMC91x ethernet |
| 56 | |
| 57 | 3.2. Hitachi UL MS7720ERP01 |
| 58 | Board specific code is in board/ms7720se |
| 59 | To use this board, type "make ms7720se_config". |
| 60 | Support devices are : |
| 61 | - SCIF |
| 62 | - SDRAM |
| 63 | - NOR Flash |
| 64 | - Marubun PCMCIA |
| 65 | |
| 66 | 3.3. Renesas R7780MP |
| 67 | Board specific code is in board/r7780mp |
| 68 | To use this board, type "make r7780mp_config". |
| 69 | Support devices are : |
| 70 | - SCIF |
| 71 | - DDR-SDRAM |
| 72 | - NOR Flash |
| 73 | - Compact Flash |
| 74 | - ASIX ethernet |
| 75 | - SH7780 PCI bridge |
| 76 | - RTL8110 ethernet |
| 77 | |
| 78 | ** README ** |
| 79 | In SuperH, S-record and binary of made u-boot work on the memory. |
| 80 | When u-boot is written in the flash, it is necessary to change the |
| 81 | address by using 'objcopy'. |
| 82 | ex) shX-linux-objcopy -Ibinary -Osrec u-boot.bin u-boot.flash.srec |
| 83 | |
| 84 | ================================================================================ |
| 85 | 4. Compiler |
| 86 | You can use the following of u-boot to compile. |
| 87 | - SuperH Linux Open site |
| 88 | http://www.superh-linux.org/ |
| 89 | - KPIT GNU tools |
| 90 | http://www.kpitgnutools.com/ |
| 91 | |
| 92 | ================================================================================ |
| 93 | 5. Future |
| 94 | I plan to support the following CPUs and boards. |
| 95 | 5.1. CPUs |
| 96 | - SH7751R(SH4) |
| 97 | - SH7785(SH4) |
| 98 | |
| 99 | 5.2. Boards |
| 100 | - Many boards ;-) |
| 101 | |
| 102 | ================================================================================ |
| 103 | Copyright (c) 2007,2008 |
| 104 | Nobuhiro Iwamatsu <iwamatsu@nigaur.org> |