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Diffstat (limited to 'board/gen860t/README')
| -rw-r--r-- | board/gen860t/README | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/board/gen860t/README b/board/gen860t/README index 761ceed..7c03f93 100644 --- a/board/gen860t/README +++ b/board/gen860t/README @@ -1,8 +1,7 @@ - This directory contains board specific code for a generic MPC860T based embedded computer, called 'GEN860T'. The design is generic in the sense that common, readily available components are used and that the architecture of the -system is i(relatively) straightforward: +system is relatively straightforward: One eight bit wide boot (FLASH) memory 32 bit main memory using SDRAM @@ -23,14 +22,14 @@ hearing from you, especially if you discover bugs or find ways to improve the quality of this U-Boot port. Here are the salient features of the system: -Clock : 33 Mhz oscillator -Processor core frequency : 66 Mhz if in 1:2:1 mode; can also run 1:1 -Bus frequency : 33 Mhz +Clock : 33.3 Mhz oscillator +Processor core frequency : 66.6 Mhz if in 1:2:1 mode; can also run 1:1 +Bus frequency : 33.3 Mhz Main memory: Type : SDRAM Width : 32 bits - Size : 64 megabytes + Size : 64 mibibytes Chip : Two Micron MT48LC16M16A2TG-7E CS : MPC860T CS1*/UPMA UPMA CONNECTIONS: @@ -42,7 +41,7 @@ Main memory: Boot memory: Type : FLASH Width : 8 bits - Size : 16 megabytes + Size : 16 mibibytes Chip : One Intel 28F128J3A (StrataFlash) CS : MPC860T CS0*/GPCM (this is the "boot" chip select) @@ -56,7 +55,7 @@ EEPROM memory: Filesystem memory: Type : NAND FLASH (Toshiba) Width : 8 bits (i.e. interface to DOC is 8 bits) - Size : 32 megabytes + Size : 32 mibibytes Chip : One DiskOnCHip Millenium Plus (DOC 2000+) CS : MPC860T CS2*/GPCM @@ -92,6 +91,12 @@ Miscellaneous: Mil-Std 1553 databus interface on CS5*/GPCM. Audio sounder (beeper) with digital volume control connected to SPKROUT. +SC variant: + A reduced-feature version of the GEN860T port is also supported: GEN860T_SC. + The 'SC' variant only provides support for the Virtex FPGA, SDRAM main + memory, EEPROM and flash memory. The system clock frequency is reduced + to 24 MHz. + Issues: The DOC 2000+ returns 0x40 as its device ID when probed using the method desxribed in the DOC datasheet. Unfortunately, the U-Boot DOC driver @@ -105,11 +110,11 @@ Status: in MTD for this device. I wish I had known this sooner :( The GEN860T board specific files and configuration is based on the work -of others who have contributed to U-Boot. The copright and license notices +of others who have contributed to U-Boot. The copyright and license notices of these authors have been retained wherever their code has been reused. All new code to support the GEN860T board is: - (C) Copyright 2001-2002 + (C) Copyright 2001-2003 Keith Outwater (keith_outwater@mvis.com) and the following license applies: |