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author | Stefan Hengelein <stefan.hengelein@fau.de> | 2015-02-25 19:44:27 +0100 |
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committer | Tony Lindgren <tony@atomide.com> | 2015-03-17 00:23:28 +0100 |
commit | 606da4826b89b044b51e3a84958b802204cfe4c7 (patch) | |
tree | 6c543eab0a07ba9842f8b8672416ed9805f7956f /arch/arm/mach-omap2/omap4-common.c | |
parent | MAINTAINERS: add OMAP defconfigs under OMAP SUPPORT (diff) | |
download | linux-606da4826b89b044b51e3a84958b802204cfe4c7.tar.xz linux-606da4826b89b044b51e3a84958b802204cfe4c7.zip |
ARM: OMAP4: remove dead kconfig option OMAP4_ERRATA_I688
The Kconfig-Option OMAP4_ERRATA_I688 is never visible due to a
contradiction in it's dependencies.
The option requires ARCH_MULTIPLATFORM to be 'disabled'. However, an
enclosing menu requires either ARCH_MULTI_V6 or ARCH_MULTI_V7 to be
enabled. These options inherit a dependency from an enclosing menu,
that requires ARCH_MULTIPLATFORM to be 'enabled'.
This is a contradiction and made this option also unavailable for
non-multiplatform configurations.
Since there are no selects on OMAP4_ERRATA_I688, which would ignore
dependencies, the code related to that option is dead and can be
removed.
This (logical) defect has been found with the undertaker tool.
(https://undertaker.cs.fau.de)
Signed-off-by: Stefan Hengelein <stefan.hengelein@fau.de>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/omap4-common.c')
-rw-r--r-- | arch/arm/mach-omap2/omap4-common.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c index cee0fe1ee6ff..afaac9e25764 100644 --- a/arch/arm/mach-omap2/omap4-common.c +++ b/arch/arm/mach-omap2/omap4-common.c @@ -52,75 +52,6 @@ static void __iomem *twd_base; #define IRQ_LOCALTIMER 29 -#ifdef CONFIG_OMAP4_ERRATA_I688 -/* Used to implement memory barrier on DRAM path */ -#define OMAP4_DRAM_BARRIER_VA 0xfe600000 - -void __iomem *dram_sync, *sram_sync; - -static phys_addr_t paddr; -static u32 size; - -void omap_bus_sync(void) -{ - if (dram_sync && sram_sync) { - writel_relaxed(readl_relaxed(dram_sync), dram_sync); - writel_relaxed(readl_relaxed(sram_sync), sram_sync); - isb(); - } -} -EXPORT_SYMBOL(omap_bus_sync); - -static int __init omap4_sram_init(void) -{ - struct device_node *np; - struct gen_pool *sram_pool; - - np = of_find_compatible_node(NULL, NULL, "ti,omap4-mpu"); - if (!np) - pr_warn("%s:Unable to allocate sram needed to handle errata I688\n", - __func__); - sram_pool = of_get_named_gen_pool(np, "sram", 0); - if (!sram_pool) - pr_warn("%s:Unable to get sram pool needed to handle errata I688\n", - __func__); - else - sram_sync = (void *)gen_pool_alloc(sram_pool, PAGE_SIZE); - - return 0; -} -omap_arch_initcall(omap4_sram_init); - -/* Steal one page physical memory for barrier implementation */ -int __init omap_barrier_reserve_memblock(void) -{ - - size = ALIGN(PAGE_SIZE, SZ_1M); - paddr = arm_memblock_steal(size, SZ_1M); - - return 0; -} - -void __init omap_barriers_init(void) -{ - struct map_desc dram_io_desc[1]; - - dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA; - dram_io_desc[0].pfn = __phys_to_pfn(paddr); - dram_io_desc[0].length = size; - dram_io_desc[0].type = MT_MEMORY_RW_SO; - iotable_init(dram_io_desc, ARRAY_SIZE(dram_io_desc)); - dram_sync = (void __iomem *) dram_io_desc[0].virtual; - - pr_info("OMAP4: Map 0x%08llx to 0x%08lx for dram barrier\n", - (long long) paddr, dram_io_desc[0].virtual); - -} -#else -void __init omap_barriers_init(void) -{} -#endif - void gic_dist_disable(void) { if (gic_dist_base_addr) |