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sh: Add document for SuperH.
This document is a summary of information concerning SuperH of U-Boot. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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doc/README.sh
| 1 | + | |
| 2 | +U-Boot for Renesas SuperH | |
| 3 | + Last update 08/10/2007 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 | + 2.2. Renesas SH7722 | |
| 22 | + | |
| 23 | +================================================================================ | |
| 24 | +3. Supported Boards | |
| 25 | + | |
| 26 | + 3.1. Hitachi UL MS7750SE01/MS7750RSE01 | |
| 27 | + Board specific code is in board/ms7750se | |
| 28 | + To use this board, type "make ms7750se_config". | |
| 29 | + | |
| 30 | + 3.2. Hitachi UL MS7722SE01 | |
| 31 | + Board specific code is in board/ms7722se | |
| 32 | + To use this board, type "make ms7722se_config". | |
| 33 | + | |
| 34 | + ** README ** | |
| 35 | + In SuperH, S-record and binary of made u-boot work on the memory. | |
| 36 | + When u-boot is written in the flash, it is necessary to change the | |
| 37 | + address by using 'objcopy'. | |
| 38 | + ex) shX-linux-objcopy -Ibinary -Osrec u-boot.bin u-boot.flash.srec | |
| 39 | + | |
| 40 | +================================================================================ | |
| 41 | +4. Compiler | |
| 42 | + You can use the following of u-boot to compile. | |
| 43 | + - SuperH Linux Open site | |
| 44 | + http://www.superh-linux.org/ | |
| 45 | + - KPIT GNU tools | |
| 46 | + http://www.kpitgnutools.com/ | |
| 47 | + | |
| 48 | +================================================================================ | |
| 49 | +5. Future | |
| 50 | + I plan to support the following CPUs and boards. | |
| 51 | + 5.1. CPUs | |
| 52 | + - SH7710/SH7712 (SH3) | |
| 53 | + - SH7780(SH4) | |
| 54 | + - SH7785(SH4) | |
| 55 | + | |
| 56 | + 5.2. Boards | |
| 57 | + - Many boards ;-) | |
| 58 | + | |
| 59 | +================================================================================ | |
| 60 | +Copyright (c) 2007 | |
| 61 | + Nobuhiro Iwamatsu <iwamatsu@nigaur.org> |