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Diffstat (limited to 'Documentation/mips/GT64120.README')
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diff --git a/Documentation/mips/GT64120.README b/Documentation/mips/GT64120.README deleted file mode 100644 index 2d0eec9..0000000 --- a/Documentation/mips/GT64120.README +++ /dev/null @@ -1,65 +0,0 @@ -README for arch/mips/gt64120 directory and subdirectories - -Jun Sun, jsun@mvista.com or jsun@junsun.net -01/27, 2001 - -MOTIVATION ----------- - -Many MIPS boards share the same system controller (or CPU companian chip), -such as GT-64120. It is highly desirable to let these boards share -the same controller code instead of duplicating them. - -This directory is meant to hold all MIPS boards that use GT-64120 or GT-64120A. - - -HOW TO ADD A BOARD ------------------- - -. Create a subdirectory include/asm/gt64120/<board>. - -. Create a file called gt64120_dep.h under that directory. - -. Modify include/asm/gt64120/gt64120.h file to include the new gt64120_dep.h - based on config options. The board-dep section is at the end of - include/asm/gt64120/gt64120.h file. There you can find all required - definitions include/asm/gt64120/<board>/gt64120_dep.h file must supply. - -. Create a subdirectory arch/mips/gt64120/<board> directory to hold - board specific routines. - -. The GT-64120 common code is supplied under arch/mips/gt64120/common directory. - It includes: - 1) arch/mips/gt64120/pci.c - - common PCI routine, include the top-level pcibios_init() - 2) arch/mips/gt64120/irq.c - - common IRQ routine, include the top-level do_IRQ() - [This part really belongs to arch/mips/kernel. jsun] - 3) arch/mips/gt64120/gt_irq.c - - common IRQ routines for GT-64120 chip. Currently it only handles - the timer interrupt. - -. Board-specific routines are supplied under arch/mips/gt64120/<board> dir. - 1) arch/mips/gt64120/<board>/pci.c - it provides bus fixup routine - 2) arch/mips/gt64120/<board>/irq.c - it provides enable/disable irqs - and board irq setup routine (irq_setup) - 3) arch/mips/gt64120/<board>/int-handler.S - - The first-level interrupt dispatching routine. - 4) a bunch of other "normal" stuff (setup, prom, dbg_io, reset, etc) - -. Follow other "normal" procedure to modify configuration files, etc. - - -TO-DO LIST ----------- - -. Expand arch/mips/gt64120/gt_irq.c to handle all GT-64120 interrupts. - We probably need to introduce GT_IRQ_BASE in board-dep header file, - which is used the starting irq_nr for all GT irqs. - - A function, gt64120_handle_irq(), will be added so that the first-level - irq dispatcher will call this function if it detects an interrupt - from GT-64120. - -. More support for GT-64120 PCI features (2nd PCI bus, perhaps) - |
