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More multiplatform enablement for ARM platforms. The ones converted in this branch are: - bcm2835 - cns3xxx - sirf - nomadik - msx - spear - tegra - ux500 We're getting close to having most of them converted! One of the larger platforms remaining is Samsung Exynos, and there are a bunch of supporting patches in this merge window for it. There was a patch in this branch to a early version of multiplatform conversion, but it ended up being reverted due to need of more bake time. The revert commit is part of the branch since it would have required rebasing multiple dependent branches and they were stable by then. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJRgg99AAoJEIwa5zzehBx3n78P/j0w/8v+F4dM29ba5M/tqbFI e3wpeFykZ/HJH+FFIEYfIablpfHsLB0LEMh0dZmwHESFC6eR0RfGL2jOkpfcH9Ne 7B/JIFN4l1iwqqKCXf+QbYL6e8YFxlJkg6BIB4KhNgliQoO/ASP/8EbcgROYuxmN KPVdw9laUCCvb5Ogh2NWVAkBHhVGAEiqK20r4TQz8alI8RUmMleWM3o+wLBWVhOO d3gtYSfuFSbrJfbpKSdycLizoV/NekdOC1A9Ov9YuOdw8DzNbrThCRQtu0tIUgxN JjfnGlEJLsJS9SESfr8SYWxTuhe/lB2dGqjQPvRtl2HGBhbtTlnWfQ0k2ZHdeJuD J50SLrGA2gN9E5PlHJXjYk8uhhGIq8bNTJ//CtDkfKTq1D7PuHVEpEctsaz3BBbM U+x9zP2v4FB+yrZu8w+gkQY/wDgHsxj08mT6BK0+l8ePdyQV22CvwmM5XlJFI03x 5J0nLYiYfef+ZN9rGgVrQbn+yv+IEkE4DmeiscjeVJE5LVdVrDpYGfx7UA7V0UA7 i3KRVpNKuy1v7GJDnKlEBPkmB+vgXTRXUPDVCuC4n0Hi5PYj4es1gY6AoXGF90wm vtKxGr/2XDLP7Ro+m0OXMttSgQShnmbrbOngfkWcFwUmG7cB3SSUUOGKM+2LNnXM MJTqVhPjkZ2GYBi/J6S/ =4hSo -----END PGP SIGNATURE----- Merge tag 'multiplatform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC multiplatform updates from Olof Johansson: "More multiplatform enablement for ARM platforms. The ones converted in this branch are: - bcm2835 - cns3xxx - sirf - nomadik - msx - spear - tegra - ux500 We're getting close to having most of them converted! One of the larger platforms remaining is Samsung Exynos, and there are a bunch of supporting patches in this merge window for it. There was a patch in this branch to a early version of multiplatform conversion, but it ended up being reverted due to need of more bake time. The revert commit is part of the branch since it would have required rebasing multiple dependent branches and they were stable by then" * tag 'multiplatform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (70 commits) mmc: sdhci-s3c: Fix operation on non-single image Samsung platforms clocksource: nomadik-mtu: fix up clocksource/timer Revert "ARM: exynos: enable multiplatform support" ARM: SPEAr13xx: Fix typo "ARCH_HAVE_CPUFREQ" ARM: exynos: enable multiplatform support rtc: s3c: make header file local mtd: onenand/samsung: make regs-onenand.h file local thermal/exynos: remove unnecessary header inclusions mmc: sdhci-s3c: remove platform dependencies ARM: samsung: move mfc device definition to s5p-dev-mfc.c ARM: exynos: move debug-macro.S to include/debug/ ARM: exynos: prepare for sparse IRQ ARM: exynos: introduce EXYNOS_ATAGS symbol ARM: tegra: build assembly files with -march=armv7-a ARM: Push selects for TWD/SCU into machine entries ARM: ux500: build hotplug.o for ARMv7-a ARM: ux500: move to multiplatform ARM: ux500: make remaining headers local ARM: ux500: make irqs.h local to platform ARM: ux500: get rid of <mach/[hardware|db8500-regs].h> ...
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2011
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*
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* License terms: GNU General Public License (GPL) version 2
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*/
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#include <linux/io.h>
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#include <linux/of.h>
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#include <asm/cacheflush.h>
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#include <asm/hardware/cache-l2x0.h>
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#include "db8500-regs.h"
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#include "id.h"
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static void __iomem *l2x0_base;
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static int __init ux500_l2x0_unlock(void)
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{
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int i;
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/*
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* Unlock Data and Instruction Lock if locked. Ux500 U-Boot versions
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* apparently locks both caches before jumping to the kernel. The
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* l2x0 core will not touch the unlock registers if the l2x0 is
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* already enabled, so we do it right here instead. The PL310 has
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* 8 sets of registers, one per possible CPU.
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*/
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for (i = 0; i < 8; i++) {
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writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_D_BASE +
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i * L2X0_LOCKDOWN_STRIDE);
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writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_I_BASE +
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i * L2X0_LOCKDOWN_STRIDE);
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}
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return 0;
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}
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static int __init ux500_l2x0_init(void)
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{
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u32 aux_val = 0x3e000000;
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if (cpu_is_u8500_family() || cpu_is_ux540_family())
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l2x0_base = __io_address(U8500_L2CC_BASE);
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else
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ux500_unknown_soc();
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/* Unlock before init */
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ux500_l2x0_unlock();
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/* DBx540's L2 has 128KB way size */
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if (cpu_is_ux540_family())
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/* 128KB way size */
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aux_val |= (0x4 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT);
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else
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/* 64KB way size */
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aux_val |= (0x3 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT);
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/* 64KB way size, 8 way associativity, force WA */
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if (of_have_populated_dt())
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l2x0_of_init(aux_val, 0xc0000fff);
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else
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l2x0_init(l2x0_base, aux_val, 0xc0000fff);
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/*
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* We can't disable l2 as we are in non secure mode, currently
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* this seems be called only during kexec path. So let's
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* override outer.disable with nasty assignment until we have
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* some SMI service available.
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*/
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outer_cache.disable = NULL;
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return 0;
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}
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early_initcall(ux500_l2x0_init);
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