ARM: Move SYS_CACHELINE_SIZE over to Kconfig

This series moves the CONFIG_SYS_CACHELINE_SIZE.  First, in nearly all
cases we are mirroring the values used by the Linux Kernel here.  Also,
so long as (and in this case, it is true) we implement flushes in hunks
that are no larger than the smallest implementation (and given that we
mirror the Linux Kernel, again we are fine) it is OK to align higher.
The biggest changes here are that we always use 64 bytes for CPU_V7 even
if for example the underlying core is only 32 bytes (this mirrors
Linux).  Second, we say ARM64 uses 64 bytes not 128 (as found in the
Linux Kernel) as we do not need multi-platform support (to this degree)
and only the Cavium ThunderX 88xx series has a use for such large
alignment.

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Stefan Roese <sr@denx.de>
Cc: Nagendra T S <nagendra@mistralsolutions.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Steve Rae <steve.rae@raedomain.com>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Heiko Schocher <hs@denx.de>
Cc: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Cc: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Paul Kocialkowski <contact@paulk.fr>
Cc: Anatolij Gustschin <agust@denx.de>
Acked-by: "Pali Rohár" <pali.rohar@gmail.com>
Cc: Adam Ford <aford173@gmail.com>
Cc: Steve Sakoman <sakoman@gmail.com>
Cc: Grazvydas Ignotas <notasas@gmail.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Robert Baldyga <r.baldyga@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Thomas Weber <weber@corscience.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: David Feng <fenghua@phytium.com.cn>
Cc: Alison Wang <b18965@freescale.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: York Sun <york.sun@nxp.com>
Cc: Shengzhou Liu <Shengzhou.Liu@nxp.com>
Cc: Mingkai Hu <mingkai.hu@nxp.com>
Cc: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Cc: Aneesh Bansal <aneesh.bansal@freescale.com>
Cc: Saksham Jain <saksham.jain@nxp.com>
Cc: Qianyu Gong <qianyu.gong@nxp.com>
Cc: Wang Dongsheng <dongsheng.wang@nxp.com>
Cc: Alex Porosanu <alexandru.porosanu@freescale.com>
Cc: Hongbo Zhang <hongbo.zhang@nxp.com>
Cc: tang yuantian <Yuantian.Tang@freescale.com>
Cc: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Cc: Josh Wu <josh.wu@atmel.com>
Cc: Bo Shen <voice.shen@atmel.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Hannes Schmelzer <oe5hpm@oevsv.at>
Cc: Thomas Chou <thomas@wytron.com.tw>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Christophe Ricard <christophe-h.ricard@st.com>
Cc: Anand Moon <linux.amoon@gmail.com>
Cc: Beniamino Galvani <b.galvani@gmail.com>
Cc: Carlo Caione <carlo@endlessm.com>
Cc: huang lin <hl@rock-chips.com>
Cc: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Cc: Xu Ziyuan <xzy.xu@rock-chips.com>
Cc: "jk.kernel@gmail.com" <jk.kernel@gmail.com>
Cc: "Ariel D'Alessandro" <ariel@vanguardiasur.com.ar>
Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Samuel Egli <samuel.egli@siemens.com>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Bernhard Nortmann <bernhard.nortmann@web.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Ben Whitten <ben.whitten@gmail.com>
Cc: Tom Warren <twarren@nvidia.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Vitaly Andrianov <vitalya@ti.com>
Cc: "Andrew F. Davis" <afd@ti.com>
Cc: Murali Karicheri <m-karicheri2@ti.com>
Cc: Carlos Hernandez <ceh@ti.com>
Cc: Ladislav Michl <ladis@linux-mips.org>
Cc: Ash Charles <ashcharles@gmail.com>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Cc: Daniel Allred <d-allred@ti.com>
Cc: Gong Qianyu <Qianyu.Gong@freescale.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Chin Liang See <clsee@altera.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Paul Kocialkowski <contact@paulk.fr>

15 files changed, 32 insertions, 46 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index aef901c..e6d4a20 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -7,6 +7,7 @@ config SYS_ARCH
 config ARM64
 	bool
 	select PHYS_64BIT
+	select SYS_CACHE_SHIFT_6
 
 config DMA_ADDR_T_64BIT
 	bool
@@ -20,37 +21,47 @@ config HAS_THUMB2
 
 config CPU_ARM720T
         bool
+	select SYS_CACHE_SHIFT_5
 
 config CPU_ARM920T
         bool
+	select SYS_CACHE_SHIFT_5
 
 config CPU_ARM926EJS
         bool
+	select SYS_CACHE_SHIFT_5
 
 config CPU_ARM946ES
         bool
+	select SYS_CACHE_SHIFT_5
 
 config CPU_ARM1136
         bool
+	select SYS_CACHE_SHIFT_5
 
 config CPU_ARM1176
         bool
         select HAS_VBAR
+	select SYS_CACHE_SHIFT_5
 
 config CPU_V7
         bool
         select HAS_VBAR
         select HAS_THUMB2
+	select SYS_CACHE_SHIFT_6
 
 config CPU_V7M
 	bool
         select HAS_THUMB2
+	select SYS_CACHE_SHIFT_5
 
 config CPU_PXA
         bool
+	select SYS_CACHE_SHIFT_5
 
 config CPU_SA1100
         bool
+	select SYS_CACHE_SHIFT_5
 
 config SYS_CPU
         default "arm720t" if CPU_ARM720T
@@ -79,6 +90,21 @@ config SYS_ARM_ARCH
 	default 4 if CPU_SA1100
 	default 8 if ARM64
 
+config SYS_CACHE_SHIFT_5
+	bool
+
+config SYS_CACHE_SHIFT_6
+	bool
+
+config SYS_CACHE_SHIFT_7
+	bool
+
+config SYS_CACHELINE_SIZE
+	int
+	default 128 if SYS_CACHE_SHIFT_7
+	default 64 if SYS_CACHE_SHIFT_6
+	default 32 if SYS_CACHE_SHIFT_5
+
 config SEMIHOSTING
 	bool "support boot from semihosting"
 	help
@@ -867,6 +893,7 @@ config TARGET_THUNDERX_88XX
 	bool "Support ThunderX 88xx"
 	select ARM64
 	select OF_CONTROL
+	select SYS_CACHE_SHIFT_7
 
 endchoice
 
diff --git a/arch/arm/cpu/arm11/cpu.c b/arch/arm/cpu/arm11/cpu.c
index 7244c2e..ef32c3f 100644
--- a/arch/arm/cpu/arm11/cpu.c
+++ b/arch/arm/cpu/arm11/cpu.c
@@ -53,11 +53,6 @@ static void cache_flush(void)
 }
 
 #ifndef CONFIG_SYS_DCACHE_OFF
-
-#ifndef CONFIG_SYS_CACHELINE_SIZE
-#define CONFIG_SYS_CACHELINE_SIZE	32
-#endif
-
 void invalidate_dcache_all(void)
 {
 	asm volatile("mcr p15, 0, %0, c7, c6, 0" : : "r" (0));
diff --git a/arch/arm/cpu/arm926ejs/cache.c b/arch/arm/cpu/arm926ejs/cache.c
index 2119382..02cb24c 100644
--- a/arch/arm/cpu/arm926ejs/cache.c
+++ b/arch/arm/cpu/arm926ejs/cache.c
@@ -8,11 +8,6 @@
 #include <common.h>
 
 #ifndef CONFIG_SYS_DCACHE_OFF
-
-#ifndef CONFIG_SYS_CACHELINE_SIZE
-#define CONFIG_SYS_CACHELINE_SIZE	32
-#endif
-
 void invalidate_dcache_all(void)
 {
 	asm volatile("mcr p15, 0, %0, c7, c6, 0\n" : : "r"(0));
diff --git a/arch/arm/cpu/pxa/cache.c b/arch/arm/cpu/pxa/cache.c
index 7aba112..d26354e 100644
--- a/arch/arm/cpu/pxa/cache.c
+++ b/arch/arm/cpu/pxa/cache.c
@@ -8,11 +8,6 @@
 #include <common.h>
 
 #ifndef CONFIG_SYS_DCACHE_OFF
-
-#ifndef CONFIG_SYS_CACHELINE_SIZE
-#define CONFIG_SYS_CACHELINE_SIZE	32
-#endif
-
 void invalidate_dcache_all(void)
 {
 	/* Flush/Invalidate I cache */
diff --git a/arch/arm/include/asm/arch-armada100/config.h b/arch/arm/include/asm/arch-armada100/config.h
index e062da1..6ebc759 100644
--- a/arch/arm/include/asm/arch-armada100/config.h
+++ b/arch/arm/include/asm/arch-armada100/config.h
@@ -16,8 +16,6 @@
 #define _ARMD1_CONFIG_H
 
 #include <asm/arch/armada100.h>
-/* default Dcache Line length for armada100 */
-#define CONFIG_SYS_CACHELINE_SIZE       32
 
 #define CONFIG_SYS_TCLK		(14745600)	/* NS16550 clk config */
 #define CONFIG_SYS_HZ_CLOCK	(3250000)	/* Timer Freq. 3.25MHZ */
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h
index b0ad4b4..5279981 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/config.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h
@@ -36,7 +36,6 @@
 #define CONFIG_SYS_FSL_SRDS_1
 #define CONFIG_SYS_FSL_SRDS_2
 #define CONFIG_SYS_PAGE_SIZE		0x10000
-#define CONFIG_SYS_CACHELINE_SIZE	64
 #ifndef L1_CACHE_BYTES
 #define L1_CACHE_SHIFT		6
 #define L1_CACHE_BYTES		BIT(L1_CACHE_SHIFT)
@@ -150,7 +149,6 @@
 
 #define CONFIG_SYS_FSL_MAX_NUM_OF_SEC		1
 #elif defined(CONFIG_FSL_LSCH2)
-#define CONFIG_SYS_CACHELINE_SIZE		64
 #define CONFIG_NUM_DDR_CONTROLLERS		1
 #define CONFIG_SYS_FSL_SEC_COMPAT		5
 #define CONFIG_SYS_FSL_OCRAM_BASE		0x10000000 /* initial RAM */
diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h
index d408fe4..56d8f32 100644
--- a/arch/arm/include/asm/arch-ls102xa/config.h
+++ b/arch/arm/include/asm/arch-ls102xa/config.h
@@ -7,8 +7,6 @@
 #ifndef _ASM_ARMV7_LS102XA_CONFIG_
 #define _ASM_ARMV7_LS102XA_CONFIG_
 
-#define CONFIG_SYS_CACHELINE_SIZE		64
-
 #define OCRAM_BASE_ADDR				0x10000000
 #define OCRAM_SIZE				0x00010000
 #define OCRAM_BASE_S_ADDR			0x10010000
diff --git a/arch/arm/include/asm/arch-mx5/imx-regs.h b/arch/arm/include/asm/arch-mx5/imx-regs.h
index e73cc07..3e79fa3 100644
--- a/arch/arm/include/asm/arch-mx5/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx5/imx-regs.h
@@ -9,8 +9,6 @@
 
 #define ARCH_MXC
 
-#define CONFIG_SYS_CACHELINE_SIZE 64
-
 #if defined(CONFIG_MX51)
 #define IRAM_BASE_ADDR		0x1FFE0000	/* internal ram */
 #define IPU_SOC_BASE_ADDR	0x40000000
diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h
index ac37e4f..53bf054 100644
--- a/arch/arm/include/asm/arch-mx6/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx6/imx-regs.h
@@ -9,12 +9,6 @@
 
 #define ARCH_MXC
 
-#ifdef CONFIG_MX6UL
-#define CONFIG_SYS_CACHELINE_SIZE	64
-#else
-#define CONFIG_SYS_CACHELINE_SIZE	32
-#endif
-
 #define ROMCP_ARB_BASE_ADDR             0x00000000
 #define ROMCP_ARB_END_ADDR              0x000FFFFF
 
diff --git a/arch/arm/include/asm/arch-mx7/imx-regs.h b/arch/arm/include/asm/arch-mx7/imx-regs.h
index 74917f0..d33be31 100644
--- a/arch/arm/include/asm/arch-mx7/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx7/imx-regs.h
@@ -9,8 +9,6 @@
 
 #define ARCH_MXC
 
-#define CONFIG_SYS_CACHELINE_SIZE	64
-
 #define ROM_SW_INFO_ADDR                0x000001E8
 #define ROMCP_ARB_BASE_ADDR             0x00000000
 #define ROMCP_ARB_END_ADDR              0x00017FFF
diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h
index 16e65c3..5400cbe 100644
--- a/arch/arm/include/asm/cache.h
+++ b/arch/arm/include/asm/cache.h
@@ -43,14 +43,11 @@ void dram_bank_mmu_setup(int bank);
 #endif
 
 /*
- * The current upper bound for ARM L1 data cache line sizes is 64 bytes.  We
- * use that value for aligning DMA buffers unless the board config has specified
- * an alternate cache line size.
+ * The value of the largest data cache relevant to DMA operations shall be set
+ * for us in CONFIG_SYS_CACHELINE_SIZE.  In some cases this may be a larger
+ * value than found in the L1 cache but this is OK to use in terms of
+ * alignment.
  */
-#ifdef CONFIG_SYS_CACHELINE_SIZE
 #define ARCH_DMA_MINALIGN	CONFIG_SYS_CACHELINE_SIZE
-#else
-#define ARCH_DMA_MINALIGN	64
-#endif
 
 #endif /* _ASM_CACHE_H */
diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c
index d330b09..4f72f89 100644
--- a/arch/arm/lib/cache.c
+++ b/arch/arm/lib/cache.c
@@ -10,10 +10,6 @@
 #include <common.h>
 #include <malloc.h>
 
-#ifndef CONFIG_SYS_CACHELINE_SIZE
-#define CONFIG_SYS_CACHELINE_SIZE 32
-#endif
-
 /*
  * Flush range from all levels of d-cache/unified-cache.
  * Affects the range [start, start + size - 1].
diff --git a/arch/arm/mach-kirkwood/include/mach/config.h b/arch/arm/mach-kirkwood/include/mach/config.h
index 60b60aa..446457f 100644
--- a/arch/arm/mach-kirkwood/include/mach/config.h
+++ b/arch/arm/mach-kirkwood/include/mach/config.h
@@ -24,8 +24,6 @@
 #endif /* CONFIG_KW88F6281 */
 
 #include <asm/arch/soc.h>
-#define CONFIG_SYS_CACHELINE_SIZE	32
-				/* default Dcache Line length for kirkwood */
 #define CONFIG_MD5	/* get_random_hex on krikwood needs MD5 support */
 #define CONFIG_KIRKWOOD_EGIGA_INIT	/* Enable GbePort0/1 for kernel */
 #define CONFIG_KIRKWOOD_RGMII_PAD_1V8	/* Set RGMII Pad voltage to 1.8V */
diff --git a/arch/arm/mach-mvebu/include/mach/config.h b/arch/arm/mach-mvebu/include/mach/config.h
index 4df70d7..1b35e08 100644
--- a/arch/arm/mach-mvebu/include/mach/config.h
+++ b/arch/arm/mach-mvebu/include/mach/config.h
@@ -26,8 +26,6 @@
 #define MV88F78X60 /* for the DDR training bin_hdr code */
 #endif
 
-#define CONFIG_SYS_CACHELINE_SIZE	32
-
 #define CONFIG_SYS_L2_PL310
 
 #ifdef CONFIG_SPL_BUILD
diff --git a/arch/arm/mach-uniphier/Kconfig b/arch/arm/mach-uniphier/Kconfig
index a8a0b90..8961458 100644
--- a/arch/arm/mach-uniphier/Kconfig
+++ b/arch/arm/mach-uniphier/Kconfig
@@ -75,6 +75,7 @@ config ARCH_UNIPHIER_LD6B
 config CACHE_UNIPHIER
 	bool "Enable the UniPhier L2 cache controller"
 	depends on ARCH_UNIPHIER_32BIT
+	select SYS_CACHE_SHIFT_7
 	default y
 	help
 	  This option allows to use the UniPhier System Cache as L2 cache.