mirror of https://gitee.com/openkylin/linux.git
8032092772
The EP93xx has four chip selects that can be used for the SDRAM memory. These chip selects are decoded to specify an address domain: SDCS3 0x00000000-0x0fffffff with Boot Option ASDO=1 SDCS0 0xc0000000-0xcfffffff SDCS1 0xd0000000-0xdfffffff SDCS2 0xe0000000-x0efffffff SDCS3 0xf0000000-0xffffffff with Boot Option ASDO=0 Because of the row/column/bank architecture of SDRAM, the mapping of these memories into the processor's memory space is discontiguous. Most ep93xx systems only use one of the chip selects. For these systems, ARCH_HAS_HOLES_MEMORYMODEL has worked fine to handle the discontiguous memory. But, some of the TS-72xx boards use multiple chip selects. The TS-7300 in particular uses SDCS3 (with ASDO=1) and SDCS2. On that system with ARCH_HAS_HOLES_MEMORYMODEL the SDCS2 memory does not get handled correctly and results in the system not booting. Change the EP93xx to ARCH_SPARSEMEM_ENABLE. This handles the discontiguous memory for all configurations. This has been tested on the following ep93xx platforms: EDB9307A with 64 MiB on SDCS0 Vision EP9307 with 64 MiB on SDCS0 TS-7300 with 64 MiB on SDCS3 (with ASDO=1) and 64 MiB on SDCS2 sim.one with 64 MiB on SDCS0 Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Cc: Russell King <linux@armlinux.org.uk> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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| .. | ||
| boot | ||
| common | ||
| configs | ||
| crypto | ||
| firmware | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| mach-actions | ||
| mach-alpine | ||
| mach-artpec | ||
| mach-asm9260 | ||
| mach-aspeed | ||
| mach-at91 | ||
| mach-axxia | ||
| mach-bcm | ||
| mach-berlin | ||
| mach-clps711x | ||
| mach-cns3xxx | ||
| mach-davinci | ||
| mach-digicolor | ||
| mach-dove | ||
| mach-ebsa110 | ||
| mach-efm32 | ||
| mach-ep93xx | ||
| mach-exynos | ||
| mach-footbridge | ||
| mach-gemini | ||
| mach-highbank | ||
| mach-hisi | ||
| mach-imx | ||
| mach-integrator | ||
| mach-iop13xx | ||
| mach-iop32x | ||
| mach-iop33x | ||
| mach-ixp4xx | ||
| mach-keystone | ||
| mach-ks8695 | ||
| mach-lpc18xx | ||
| mach-lpc32xx | ||
| mach-mediatek | ||
| mach-meson | ||
| mach-mmp | ||
| mach-moxart | ||
| mach-mv78xx0 | ||
| mach-mvebu | ||
| mach-mxs | ||
| mach-netx | ||
| mach-nomadik | ||
| mach-nspire | ||
| mach-omap1 | ||
| mach-omap2 | ||
| mach-orion5x | ||
| mach-oxnas | ||
| mach-picoxcell | ||
| mach-prima2 | ||
| mach-pxa | ||
| mach-qcom | ||
| mach-realview | ||
| mach-rockchip | ||
| mach-rpc | ||
| mach-s3c24xx | ||
| mach-s3c64xx | ||
| mach-s5pv210 | ||
| mach-sa1100 | ||
| mach-shmobile | ||
| mach-socfpga | ||
| mach-spear | ||
| mach-sti | ||
| mach-stm32 | ||
| mach-sunxi | ||
| mach-tango | ||
| mach-tegra | ||
| mach-u300 | ||
| mach-uniphier | ||
| mach-ux500 | ||
| mach-versatile | ||
| mach-vexpress | ||
| mach-vt8500 | ||
| mach-w90x900 | ||
| mach-zx | ||
| mach-zynq | ||
| mm | ||
| net | ||
| nwfpe | ||
| oprofile | ||
| plat-iop | ||
| plat-omap | ||
| plat-orion | ||
| plat-pxa | ||
| plat-samsung | ||
| plat-versatile | ||
| probes | ||
| tools | ||
| vdso | ||
| vfp | ||
| xen | ||
| Kconfig | ||
| Kconfig-nommu | ||
| Kconfig.debug | ||
| Makefile | ||