> -----Original Message----- > From: Grazvydas Ignotas [mailto:notasas@xxxxxxxxx] > Sent: Monday, October 04, 2010 2:34 PM > To: Shilimkar, Santosh > Cc: Tony Lindgren; linux-omap@xxxxxxxxxxxxxxx; linux-arm- > kernel@xxxxxxxxxxxxxxxxxxx; Russell King - ARM Linux > Subject: Re: [PATCH 02/14] omap: Map only available sram memory > > >> > > >> > This hangs OMAP3 pandora: > >> > > >> > [ 0.000000] Linux version > >> > 2.6.36-rc6-next-20101001-00002-ge76bb53-dirty (notaz@pixelinis) (gcc > >> > version 4.3.3 (Sourcery G++ Lite 2009q1-20 > >> > [ 0.000000] CPU: ARMv7 Processor [411fc082] revision 2 (ARMv7), > >> cr=10c53c7f > >> > [ 0.000000] CPU: VIPT nonaliasing data cache, VIPT nonaliasing > >> > instruction cache > >> > [ 0.000000] Machine: Pandora Handheld Console > >> > [ 0.000000] Ignoring unrecognised tag 0x54410008 > >> > [ 0.000000] bootconsole [earlycon0] enabled > >> > [ 0.000000] Reserving 6422528 bytes SDRAM for VRAM > >> > [ 0.000000] Memory policy: ECC disabled, Data cache writeback > >> > [ 0.000000] OMAP3430/3530 ES2.1 (l2cache iva sgx neon isp ) > >> > [ 0.000000] SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: > 0x10000 > >> > (stuck here) > >> > > >> > reverting this fixes the problem. > >> > >> Hmm, boots fine here with overo. Any idea what in this patch breaks > >> pandora? > >> > > The change in this patch is not board dependent really. Have tested this > > on 3430SDP. Pandora is OMAP3 based, right ? > > OMAP3530 ES2.1, also tried on friend's beagleboard b5 (also ES2.1) and > it has the same problem. Maybe it's because of older Cortex A8 used > there, or I'm missing some errata workaround in defconfig. > > BTW, hacking the size to 1M on top of your patch fixes the problem too: > > base = omap_sram_start; > base = ROUND_DOWN(base, PAGE_SIZE); > omap_sram_io_desc[0].pfn = __phys_to_pfn(base); > - omap_sram_io_desc[0].length = ROUND_DOWN(omap_sram_size, > PAGE_SIZE); > + omap_sram_io_desc[0].length = 0x100000; This is the exact reason this patch is created :) So that you map only available memory instead of 1 MB > iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc)); -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
