From: Alexander Stein <alexanders83@web.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 0/6] dcache support for Raspberry Pi 1
Date: Mon, 20 Jul 2015 22:59:58 +0200 [thread overview]
Message-ID: <1437426004-22549-1-git-send-email-alexanders83@web.de> (raw)
This patchset enables dcache support for Raspberry Pi 1.
First the cache support code for arm1136 and 1176 was merged.
CONFIG_SYS_CACHELINE_SIZE is defined as 32 bytes which is used as alignment
for mailbox buffer allocations.
Then rpi mailbox code has now dcache flush for writing the mailbox request and
a dcache invalidation for receiving the mailbox answer.
Finally the CONFIG_SYS_DCACHE_OFF switch got removed from rpi1 config. It is
still set for rpi2 config.
dcache supprt increases the MMC read performance on RPI 1 from 5,4 MiB/s to
12.3 MiB/s.
This was tested by the following command:
> fatload mmc 0:1 ${kernel_addr_r} zImage
Changes in v2:
* Merge arm1136/1176 cache code
* Use cacheline size as mailbox buffer alignment
* Flush/invalidate mailbox buffer up to cacheline size
Alexander Stein (6):
arm1136: Remove dead code
arm1136/arm1176: Merge cache handling code
ARM: bcm283x: Define CONFIG_SYS_CACHELINE_SIZE
ARM: bcm283x: Allocate all mailbox buffers cacheline aligned
arm/mach-bcm283x/mbox: Flush and invalidate dcache when using fw
mailbox
arm/rpi: Enable dcache
arch/arm/cpu/arm11/Makefile | 8 ++
arch/arm/cpu/arm11/cpu.c | 150 ++++++++++++++++++++++++++++
arch/arm/cpu/arm1136/Makefile | 1 -
arch/arm/cpu/arm1136/cpu.c | 160 ------------------------------
arch/arm/cpu/arm1176/Makefile | 4 +-
arch/arm/cpu/arm1176/cpu.c | 51 ----------
arch/arm/mach-bcm283x/include/mach/mbox.h | 4 +
arch/arm/mach-bcm283x/mbox.c | 9 ++
board/raspberrypi/rpi/rpi.c | 10 +-
drivers/video/bcm2835.c | 4 +-
include/configs/rpi-common.h | 2 +-
include/configs/rpi_2.h | 1 +
12 files changed, 183 insertions(+), 221 deletions(-)
create mode 100644 arch/arm/cpu/arm11/Makefile
create mode 100644 arch/arm/cpu/arm11/cpu.c
delete mode 100644 arch/arm/cpu/arm1136/cpu.c
delete mode 100644 arch/arm/cpu/arm1176/cpu.c
--
2.4.6
next reply other threads:[~2015-07-20 20:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-20 20:59 Alexander Stein [this message]
2015-07-20 20:59 ` [U-Boot] [PATCH v2 1/6] arm1136: Remove dead code Alexander Stein
2015-07-20 21:00 ` [U-Boot] [PATCH v2 2/6] arm1136/arm1176: Merge cache handling code Alexander Stein
2015-07-20 21:00 ` [U-Boot] [PATCH v2 3/6] ARM: bcm283x: Define CONFIG_SYS_CACHELINE_SIZE Alexander Stein
2015-07-20 21:00 ` [U-Boot] [PATCH v2 4/6] ARM: bcm283x: Allocate all mailbox buffers cacheline aligned Alexander Stein
2015-07-20 21:00 ` [U-Boot] [PATCH v2 5/6] arm/mach-bcm283x/mbox: Flush and invalidate dcache when using fw mailbox Alexander Stein
2015-07-20 21:00 ` [U-Boot] [PATCH v2 6/6] arm/rpi: Enable dcache Alexander Stein
2015-07-21 21:21 ` Alexander Stein
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