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| --- | ||
| refs/heads/master: 17ccb834d517c66c09123c24ba8553c5b14e0f78 | ||
| refs/heads/master: 64ed28a87a0c075e91c1c5b0fe7d225a6cc6ae39 |
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| Samsung ARM Linux Overview | ||
| ========================== | ||
|
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| Introduction | ||
| ------------ | ||
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| The Samsung range of ARM SoCs spans many similar devices, from the initial | ||
| ARM9 through to the newest ARM cores. This document shows an overview of | ||
| the current kernel support, how to use it and where to find the code | ||
| that supports this. | ||
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| The currently supported SoCs are: | ||
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| - S3C24XX: See Documentation/arm/Samsung-S3C24XX/Overview.txt for full list | ||
| - S3C64XX: S3C6400 and S3C6410 | ||
| - S5PC6440 | ||
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| S5PC100 and S5PC110 support is currently being merged | ||
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| S3C24XX Systems | ||
| --------------- | ||
|
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| There is still documentation in Documnetation/arm/Samsung-S3C24XX/ which | ||
| deals with the architecture and drivers specific to these devices. | ||
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| See Documentation/arm/Samsung-S3C24XX/Overview.txt for more information | ||
| on the implementation details and specific support. | ||
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| Configuration | ||
| ------------- | ||
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| A number of configurations are supplied, as there is no current way of | ||
| unifying all the SoCs into one kernel. | ||
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| s5p6440_defconfig - S5P6440 specific default configuration | ||
| s5pc100_defconfig - S5PC100 specific default configuration | ||
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| Layout | ||
| ------ | ||
|
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| The directory layout is currently being restructured, and consists of | ||
| several platform directories and then the machine specific directories | ||
| of the CPUs being built for. | ||
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| plat-samsung provides the base for all the implementations, and is the | ||
| last in the line of include directories that are processed for the build | ||
| specific information. It contains the base clock, GPIO and device definitions | ||
| to get the system running. | ||
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| plat-s3c is the s3c24xx/s3c64xx platform directory, although it is currently | ||
| involved in other builds this will be phased out once the relevant code is | ||
| moved elsewhere. | ||
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| plat-s3c24xx is for s3c24xx specific builds, see the S3C24XX docs. | ||
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| plat-s3c64xx is for the s3c64xx specific bits, see the S3C24XX docs. | ||
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| plat-s5p is for s5p specific builds, more to be added. | ||
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| [ to finish ] | ||
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| Port Contributors | ||
| ----------------- | ||
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| Ben Dooks (BJD) | ||
| Vincent Sanders | ||
| Herbert Potzl | ||
| Arnaud Patard (RTP) | ||
| Roc Wu | ||
| Klaus Fetscher | ||
| Dimitry Andric | ||
| Shannon Holland | ||
| Guillaume Gourat (NexVision) | ||
| Christer Weinigel (wingel) (Acer N30) | ||
| Lucas Correia Villa Real (S3C2400 port) | ||
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| Document Author | ||
| --------------- | ||
|
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| Copyright 2009-2010 Ben Dooks <ben-linux@fluff.org> |
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trunk/Documentation/arm/Samsung/clksrc-change-registers.awk
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| #!/usr/bin/awk -f | ||
| # | ||
| # Copyright 2010 Ben Dooks <ben-linux@fluff.org> | ||
| # | ||
| # Released under GPLv2 | ||
|
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| # example usage | ||
| # ./clksrc-change-registers.awk arch/arm/plat-s5pc1xx/include/plat/regs-clock.h < src > dst | ||
|
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| function extract_value(s) | ||
| { | ||
| eqat = index(s, "=") | ||
| comat = index(s, ",") | ||
| return substr(s, eqat+2, (comat-eqat)-2) | ||
| } | ||
|
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| function remove_brackets(b) | ||
| { | ||
| return substr(b, 2, length(b)-2) | ||
| } | ||
|
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| function splitdefine(l, p) | ||
| { | ||
| r = split(l, tp) | ||
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| p[0] = tp[2] | ||
| p[1] = remove_brackets(tp[3]) | ||
| } | ||
|
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| function find_length(f) | ||
| { | ||
| if (0) | ||
| printf "find_length " f "\n" > "/dev/stderr" | ||
|
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| if (f ~ /0x1/) | ||
| return 1 | ||
| else if (f ~ /0x3/) | ||
| return 2 | ||
| else if (f ~ /0x7/) | ||
| return 3 | ||
| else if (f ~ /0xf/) | ||
| return 4 | ||
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| printf "unknown legnth " f "\n" > "/dev/stderr" | ||
| exit | ||
| } | ||
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| function find_shift(s) | ||
| { | ||
| id = index(s, "<") | ||
| if (id <= 0) { | ||
| printf "cannot find shift " s "\n" > "/dev/stderr" | ||
| exit | ||
| } | ||
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| return substr(s, id+2) | ||
| } | ||
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| BEGIN { | ||
| if (ARGC < 2) { | ||
| print "too few arguments" > "/dev/stderr" | ||
| exit | ||
| } | ||
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| # read the header file and find the mask values that we will need | ||
| # to replace and create an associative array of values | ||
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| while (getline line < ARGV[1] > 0) { | ||
| if (line ~ /\#define.*_MASK/ && | ||
| !(line ~ /S5PC100_EPLL_MASK/) && | ||
| !(line ~ /USB_SIG_MASK/)) { | ||
| splitdefine(line, fields) | ||
| name = fields[0] | ||
| if (0) | ||
| printf "MASK " line "\n" > "/dev/stderr" | ||
| dmask[name,0] = find_length(fields[1]) | ||
| dmask[name,1] = find_shift(fields[1]) | ||
| if (0) | ||
| printf "=> '" name "' LENGTH=" dmask[name,0] " SHIFT=" dmask[name,1] "\n" > "/dev/stderr" | ||
| } else { | ||
| } | ||
| } | ||
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| delete ARGV[1] | ||
| } | ||
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| /clksrc_clk.*=.*{/ { | ||
| shift="" | ||
| mask="" | ||
| divshift="" | ||
| reg_div="" | ||
| reg_src="" | ||
| indent=1 | ||
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| print $0 | ||
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| for(; indent >= 1;) { | ||
| if ((getline line) <= 0) { | ||
| printf "unexpected end of file" > "/dev/stderr" | ||
| exit 1; | ||
| } | ||
|
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| if (line ~ /\.shift/) { | ||
| shift = extract_value(line) | ||
| } else if (line ~ /\.mask/) { | ||
| mask = extract_value(line) | ||
| } else if (line ~ /\.reg_divider/) { | ||
| reg_div = extract_value(line) | ||
| } else if (line ~ /\.reg_source/) { | ||
| reg_src = extract_value(line) | ||
| } else if (line ~ /\.divider_shift/) { | ||
| divshift = extract_value(line) | ||
| } else if (line ~ /{/) { | ||
| indent++ | ||
| print line | ||
| } else if (line ~ /}/) { | ||
| indent-- | ||
|
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| if (indent == 0) { | ||
| if (0) { | ||
| printf "shift '" shift "' ='" dmask[shift,0] "'\n" > "/dev/stderr" | ||
| printf "mask '" mask "'\n" > "/dev/stderr" | ||
| printf "dshft '" divshift "'\n" > "/dev/stderr" | ||
| printf "rdiv '" reg_div "'\n" > "/dev/stderr" | ||
| printf "rsrc '" reg_src "'\n" > "/dev/stderr" | ||
| } | ||
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| generated = mask | ||
| sub(reg_src, reg_div, generated) | ||
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| if (0) { | ||
| printf "/* rsrc " reg_src " */\n" | ||
| printf "/* rdiv " reg_div " */\n" | ||
| printf "/* shift " shift " */\n" | ||
| printf "/* mask " mask " */\n" | ||
| printf "/* generated " generated " */\n" | ||
| } | ||
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| if (reg_div != "") { | ||
| printf "\t.reg_div = { " | ||
| printf ".reg = " reg_div ", " | ||
| printf ".shift = " dmask[generated,1] ", " | ||
| printf ".size = " dmask[generated,0] ", " | ||
| printf "},\n" | ||
| } | ||
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| printf "\t.reg_src = { " | ||
| printf ".reg = " reg_src ", " | ||
| printf ".shift = " dmask[mask,1] ", " | ||
| printf ".size = " dmask[mask,0] ", " | ||
|
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| printf "},\n" | ||
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| } | ||
|
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| print line | ||
| } else { | ||
| print line | ||
| } | ||
|
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| if (0) | ||
| printf indent ":" line "\n" > "/dev/stderr" | ||
| } | ||
| } | ||
|
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| // && ! /clksrc_clk.*=.*{/ { print $0 } |
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