On Mon, Jan 25, 2010 at 08:53:57AM +0900, Kukjin Kim wrote: > This patch adds support for Samsung S5P6442 CPU. This patch also adds > an entry for S5P6442 cpu in plat-s5p cpu table. > > Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx> [snip] This is a clarifction / extra comment on my previous review as requested in private. Posted here as it is useful to everyone involved. > new file mode 100644 > index 0000000..1b3ab4d > --- /dev/null > +++ b/arch/arm/mach-s5p6442/include/mach/debug-macro.S > @@ -0,0 +1,39 @@ > +/* linux/arch/arm/mach-s5p6442/include/mach/debug-macro.S > + * > + * Copyright (c) 2010 Samsung Electronics Co., Ltd. > + * http://www.samsung.com/ > + * > + * Based on arch/arm/mach-s3c6400/include/mach/debug-macro.S > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > +*/ > + > +/* pull in the relevant register and map files. */ > + > +#include <mach/map.h> > +#include <plat/regs-serial.h> > + > + /* note, for the boot process to work we have to keep the UART > + * virtual address aligned to an 1MiB boundary for the L1 > + * mapping the head code makes. We keep the UART virtual address > + * aligned and add in the offset when we load the value here. > + */ If someone had read the above comment before copying this file, they would have realised it is un-necessary for the current support as the UART blocks in all the s5p6440, s5p6442 and the v210 are aligned on one-megabyte boundaries and as such are suitable for mapping on 1MiB L1 section boundaries. This should removed from both the 6442 and s5pv210 before submission. > + .macro addruart, rx > + mrc p15, 0, \rx, c1, c0 > + tst \rx, #1 > + ldreq \rx, = S5P_PA_UART > + ldrne \rx, = (S5P_VA_UART + S5P_PA_UART & 0xfffff) again, since we're one a 1MiB boundary we can lose the + S5P_PA_UART & 0xfffff from this. > +#if CONFIG_DEBUG_S3C_UART != 0 > + add \rx, \rx, #(0x400 * CONFIG_DEBUG_S3C_UART) > +#endif > + .endm > + > +/* include the reset of the code which will do the work, we're only > + * compiling for a single cpu processor type so the default of s3c2440 > + * will be fine with us. > + */ > + > +#include <plat/debug-macro.S> As for the debug-macro.S core in arch/arm/plat-s3c/include/plat/debug-macro.S you can (and it would be advisable) to add the relevant v210 macros so that both the v210 and the 6442 can use them in their local files... so possibly: .macro fifo_full_v210 rd, rx .... .endm .macro fifo_level_v210 rd, rx .... .endm PS, you will want to edit the v210 code to fix this too. -- Ben Q: What's a light-year? A: One-third less calories than a regular year. -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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