I've managed to disable HIGHMEM from within the kernel. However im having trouble compiling. The usual 'make clean' and 'make all' gives me errors:
root@beaglebone:/usr/src/linux-headers-4.1.2-ti-r4# make all CHK include/config/kernel.release UPD include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h make[1]: *** No rule to make target 'arch/arm/tools/gen-mach-types', needed by 'include/generated/mach-types.h'. Stop. arch/arm/Makefile:297: recipe for target 'archprepare' failed make: *** [archprepare] Error 2 How do i compile the kernel with the changes made to .config? On Tuesday, August 4, 2015 at 2:15:41 PM UTC-7, RobertCNelson wrote: > > On Tue, Aug 4, 2015 at 4:06 PM, Robert Nelson <robert...@gmail.com > <javascript:>> wrote: > > On Tue, Aug 4, 2015 at 1:19 PM, <thom...@googlemail.com <javascript:>> > wrote: > >> I am using the Digilent PmodSD as the second sd card for the BBB: > >> http://www.digilentinc.com/Products/Detail.cfm?Prod=PMOD-SD > >> > >> I've been following this forum: > >> http://www.alteraforum.com/forum/showthread.php?t=19335&page=4 > >> > >> but assumes that i have the mmc_spi driver, which isnt found in the > >> 4.1.2-ti-r4 kernel on my beaglebone: mmc_spi.c source file doesnt exist > >> also. > >> > >> root@beaglebone:~# find /lib/modules/`uname -r` -type f -name "*.ko" | > grep > >> mmc > >> > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/media/mmc/siano/smssdio.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/sdhci.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/vub300.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/dw_mmc-exynos.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/dw_mmc-pltfm.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/ushc.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/dw_mmc.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/sdhci-pltfm.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/rtsx_usb_sdmmc.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/card/sdio_uart.ko > >> > >> > >> root@beaglebone:~# find /lib/modules/`uname -r` -type f -name "*.ko" | > grep > >> spi > >> > >> > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/misc/ad525x_dpot-spi.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/spi/spi-butterfly.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/spi/spi-lm70llp.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/spi/spi-omap2-mcspi.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mtd/spi-nor/spi-nor.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/scsi/scsi_transport_spi.ko > >> > /lib/modules/4.1.2-ti-r4/kernel/drivers/net/wireless/ti/wl1251/wl1251_spi.ko > > >> > /lib/modules/4.1.2-ti-r4/kernel/drivers/net/wireless/ti/wlcore/wlcore_spi.ko > > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/net/can/spi/mcp251x.ko > >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mfd/mc13xxx-spi.ko > >> > >> > >> In another forum, a person solved this by actually interfacing the > second > >> SD to the mmc lines: SPI-SD Card > >> > >> I dont see how this will work since mmc1 lines on the p8 header are > used by > >> the board. And when i wire my sd card to these lines the Beaglebone > doesnt > >> boot up. Also the mmc2 on the p8 header doesnt have a cmd mode pin > >> (mmc2_cmd), so i cant use these lines. There are another set of mmc2 > lines > >> on the p9 header but its also missing a mmc2_cmd and a mmc2_clk mode > pin. > >> > >> Any insight on how to add a second SD card? > > > > CONFIG_HIGHMEM=y i set... > > > > 472 config MMC_SPI > > 473 tristate "MMC/SD/SDIO over SPI" > > 474 depends on SPI_MASTER && !HIGHMEM && HAS_DMA > > 475 select CRC7 > > 476 select CRC_ITU_T > > 477 help > > 478 Some systems access MMC/SD/SDIO cards using a SPI > controller > > 479 instead of using a "native" MMC/SD/SDIO controller. This > has a > > 480 disadvantage of being relatively high overhead, but a > compensating > > 481 advantage of working on many systems without dedicated > MMC/SD/SDIO > > 482 controllers. > > 483 > > 484 If unsure, or if your system has no SPI master driver, say > N. > > > > So rebuild the kernel without HIGHMEM, then you can enable MMC_SPI.. > > Note it's been depended on !HIGHMEM since it's initial upstreaming.. > > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15a0580ced081a0f7dc2deea8a4812bdc5e9a109 > > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
