[FE training-materials-updates] sysdev-u-boot: mention the need for nandecc hw/sw when flashing bootloaders
thomas.petazzoni at free-electrons.com
thomas.petazzoni at free-electrons.com
Fri May 4 16:34:02 CEST 2012
- Log -----------------------------------------------------------------
http://git.free-electrons.com/training-materials/commit/?id=d6d4b19fb78182d73eddb77dbc8fff23c2aa2de6
commit d6d4b19fb78182d73eddb77dbc8fff23c2aa2de6
Author: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Date: Fri May 4 16:33:37 2012 +0200
sysdev-u-boot: mention the need for nandecc hw/sw when flashing bootloaders
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
diff --git a/labs/sysdev-u-boot/sysdev-u-boot.tex b/labs/sysdev-u-boot/sysdev-u-boot.tex
index 6ea6776..6d58ae4 100644
--- a/labs/sysdev-u-boot/sysdev-u-boot.tex
+++ b/labs/sysdev-u-boot/sysdev-u-boot.tex
@@ -382,6 +382,13 @@ fatload mmc 0 81000000 MLO
This loads the file from MMC 0 partition 0 to memory at address 0x81000000
\begin{verbatim}
+nandecc hw
+\end{verbatim}
+
+This tells U-Boot to write data to the NAND using the hardware ECC
+algorithm, which the ROM code of the OMAP uses to load X-Loader.
+
+\begin{verbatim}
onenand erase 0 80000
\end{verbatim}
@@ -400,7 +407,10 @@ write on it.
X-Loader has been transfered to NAND flash. You can now do the same
with U-Boot. The storage offset in the NAND is 0x80000 (just after
-the space reserved for X-Loader) and the length is 0x180000.
+the space reserved for X-Loader) and the length is 0x180000. You will
+have to flash U-Boot to NAND with the software ECC algorithm, which
+X-Loader uses to load U-Boot from NAND. This can be achieved by
+running the \code{nandecc sw} command.
After flashing the U-Boot image, also erase the U-boot environment
variables defined by the manufacturer or by previous users of your
http://git.free-electrons.com/training-materials/commit/?id=25ce17be825a4ae35ca218a4c9e47c108fca87a9
commit 25ce17be825a4ae35ca218a4c9e47c108fca87a9
Author: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Date: Fri May 4 16:30:26 2012 +0200
Adapt kernel lab to IGEPv2 revision 6
Note that we *must* use 3.2 at the moment, and not any later version,
which have non-working UART. This problem has been reported to the
linux-omap community:
http://article.gmane.org/gmane.linux.ports.arm.omap/76277.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
diff --git a/lab-data/sysdev/kernel/linux-3.2-arm-omap3-igep0020-add-support-for-micron-nand-flash.patch b/lab-data/sysdev/kernel/linux-3.2-arm-omap3-igep0020-add-support-for-micron-nand-flash.patch
new file mode 100644
index 0000000..79b5cf0
--- /dev/null
+++ b/lab-data/sysdev/kernel/linux-3.2-arm-omap3-igep0020-add-support-for-micron-nand-flash.patch
@@ -0,0 +1,216 @@
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+ Wed, 04 Apr 2012 11:37:12 -0700 (PDT)
+From: Javier Martinez Canillas <javier at dowhile0.org>
+To: Tony Lindgren <tony at atomide.com>
+Subject: [RESEND PATCH 2/2] OMAP3: igep0020: Add support for Micron NAND Flash
+ storage memory
+Date: Wed, 4 Apr 2012 20:36:26 +0200
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+Cc: linaro-kernel at lists.linaro.org, linaro-dev at lists.linaro.org,
+ patches at linaro.org,
+ =?UTF-8?q?Enric=20Balletb=C3=B2=20i=20Serra?= <eballetbo at gmail.com>,
+ Russell King <linux at arm.linux.org.uk>,
+ Javier Martinez Canillas <javier at dowhile0.org>, linux-omap at vger.kernel.org,
+ linux-arm-kernel at lists.infradead.org
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+
+IGEP-based boards can have two different flash memories, a OneNAND or
+a NAND device. The boot configuration pins (sys_boot) are used to
+specify which memory is available.
+
+Also, this patch removes unnecesary code for registering the OneNAND.
+
+Signed-off-by: Javier Martinez Canillas <javier at dowhile0.org>
+---
+ arch/arm/mach-omap2/board-igep0020.c | 75 ++++++++++++++--------------------
+ 1 files changed, 31 insertions(+), 44 deletions(-)
+
+diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
+index 930c0d3..4af615a 100644
+--- a/arch/arm/mach-omap2/board-igep0020.c
++++ b/arch/arm/mach-omap2/board-igep0020.c
+@@ -24,6 +24,8 @@
+ #include <linux/i2c/twl.h>
+ #include <linux/mmc/host.h>
+
++#include <linux/mtd/nand.h>
++
+ #include <asm/mach-types.h>
+ #include <asm/mach/arch.h>
+
+@@ -39,6 +41,8 @@
+ #include "hsmmc.h"
+ #include "sdram-numonyx-m65kxxxxam.h"
+ #include "common-board-devices.h"
++#include "board-flash.h"
++#include "control.h"
+
+ #define IGEP2_SMSC911X_CS 5
+ #define IGEP2_SMSC911X_GPIO 176
+@@ -60,6 +64,10 @@
+ #define IGEP3_GPIO_LED1_RED 16
+ #define IGEP3_GPIO_USBH_NRESET 183
+
++#define IGEP_SYSBOOT_MASK 0x1f
++#define IGEP_SYSBOOT_NAND 0x0f
++#define IGEP_SYSBOOT_ONENAND 0x10
++
+ /*
+ * IGEP2 Hardware Revision Table
+ *
+@@ -110,8 +118,10 @@ static void __init igep2_get_revision(void)
+ gpio_free(IGEP2_GPIO_LED1_RED);
+ }
+
+-#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
+- defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
++#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
++ defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) || \
++ defined(CONFIG_MTD_NAND_OMAP2) || \
++ defined(CONFIG_MTD_NAND_OMAP2_MODULE)
+
+ #define ONENAND_MAP 0x20000000
+
+@@ -123,7 +133,7 @@ static void __init igep2_get_revision(void)
+ * So MTD regards it as 4KiB page size and 256KiB block size 64*(2*2048)
+ */
+
+-static struct mtd_partition igep_onenand_partitions[] = {
++static struct mtd_partition igep_flash_partitions[] = {
+ {
+ .name = "X-Loader",
+ .offset = 0,
+@@ -151,50 +161,27 @@ static struct mtd_partition igep_onenand_partitions[] = {
+ },
+ };
+
+-static struct omap_onenand_platform_data igep_onenand_data = {
+- .parts = igep_onenand_partitions,
+- .nr_parts = ARRAY_SIZE(igep_onenand_partitions),
+- .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
+-};
+-
+-static struct platform_device igep_onenand_device = {
+- .name = "omap2-onenand",
+- .id = -1,
+- .dev = {
+- .platform_data = &igep_onenand_data,
+- },
+-};
++static inline u32 igep_get_sysboot_value(void)
++{
++ return omap_ctrl_readl(OMAP343X_CONTROL_STATUS) & IGEP_SYSBOOT_MASK;
++}
+
+ static void __init igep_flash_init(void)
+ {
+- u8 cs = 0;
+- u8 onenandcs = GPMC_CS_NUM + 1;
+-
+- for (cs = 0; cs < GPMC_CS_NUM; cs++) {
+- u32 ret;
+- ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
+-
+- /* Check if NAND/oneNAND is configured */
+- if ((ret & 0xC00) == 0x800)
+- /* NAND found */
+- pr_err("IGEP: Unsupported NAND found\n");
+- else {
+- ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
+- if ((ret & 0x3F) == (ONENAND_MAP >> 24))
+- /* ONENAND found */
+- onenandcs = cs;
+- }
+- }
+-
+- if (onenandcs > GPMC_CS_NUM) {
+- pr_err("IGEP: Unable to find configuration in GPMC\n");
+- return;
+- }
+-
+- igep_onenand_data.cs = onenandcs;
+-
+- if (platform_device_register(&igep_onenand_device) < 0)
+- pr_err("IGEP: Unable to register OneNAND device\n");
++ u32 mux;
++ mux = igep_get_sysboot_value();
++
++ if (mux == IGEP_SYSBOOT_NAND) {
++ pr_info("IGEP: initializing NAND memory device\n");
++ board_nand_init(igep_flash_partitions,
++ ARRAY_SIZE(igep_flash_partitions),
++ 0, NAND_BUSWIDTH_16);
++ } else if (mux == IGEP_SYSBOOT_ONENAND) {
++ pr_info("IGEP: initializing OneNAND memory device\n");
++ board_onenand_init(igep_flash_partitions,
++ ARRAY_SIZE(igep_flash_partitions), 0);
++ } else
++ pr_err("IGEP: Flash: unsupported sysboot sequence found\n");
+ }
+
+ #else
+--
+1.7.7.6
+
+
+_______________________________________________
+linux-arm-kernel mailing list
+linux-arm-kernel at lists.infradead.org
+http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/lab-data/sysdev/kernel/omap2-make-board-onenand-init-visible-to-board-code.patch b/lab-data/sysdev/kernel/omap2-make-board-onenand-init-visible-to-board-code.patch
new file mode 100644
index 0000000..ad7fd3f
--- /dev/null
+++ b/lab-data/sysdev/kernel/omap2-make-board-onenand-init-visible-to-board-code.patch
@@ -0,0 +1,130 @@
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+ Wed, 04 Apr 2012 11:37:10 -0700 (PDT)
+From: Javier Martinez Canillas <javier at dowhile0.org>
+To: Tony Lindgren <tony at atomide.com>
+Subject: [RESEND PATCH 1/2] ARM: OMAP2+: nand: Make board_onenand_init()
+ visible to board code
+Date: Wed, 4 Apr 2012 20:36:25 +0200
+Message-Id: <1333564586-3259-1-git-send-email-javier at dowhile0.org>
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+Cc: linaro-kernel at lists.linaro.org, linaro-dev at lists.linaro.org,
+ patches at linaro.org,
+ =?UTF-8?q?Enric=20Balletb=C3=B2=20i=20Serra?= <eballetbo at gmail.com>,
+ Russell King <linux at arm.linux.org.uk>,
+ Javier Martinez Canillas <javier at dowhile0.org>, linux-omap at vger.kernel.org,
+ linux-arm-kernel at lists.infradead.org
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+
+board_onenand_init() and board_nand_init() initialization functions are
+used to initialize OneNAND and NAND memories respectively. But only
+board_nand_init() was visible to be used from board code. This patch makes
+possible to initialize a OneNAND flash memory within platform code.
+
+Signed-off-by: Javier Martinez Canillas <javier at dowhile0.org>
+---
+ arch/arm/mach-omap2/board-flash.c | 4 ++--
+ arch/arm/mach-omap2/board-flash.h | 11 +++++++++++
+ 2 files changed, 13 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/mach-omap2/board-flash.c b/arch/arm/mach-omap2/board-flash.c
+index 0349fd2..70a81f9 100644
+--- a/arch/arm/mach-omap2/board-flash.c
++++ b/arch/arm/mach-omap2/board-flash.c
+@@ -87,7 +87,7 @@ static struct omap_onenand_platform_data board_onenand_data = {
+ .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
+ };
+
+-static void
++void
+ __init board_onenand_init(struct mtd_partition *onenand_parts,
+ u8 nr_parts, u8 cs)
+ {
+@@ -98,7 +98,7 @@ __init board_onenand_init(struct mtd_partition *onenand_parts,
+ gpmc_onenand_init(&board_onenand_data);
+ }
+ #else
+-static void
++void
+ __init board_onenand_init(struct mtd_partition *nor_parts, u8 nr_parts, u8 cs)
+ {
+ }
+diff --git a/arch/arm/mach-omap2/board-flash.h b/arch/arm/mach-omap2/board-flash.h
+index d25503a..c44b70d 100644
+--- a/arch/arm/mach-omap2/board-flash.h
++++ b/arch/arm/mach-omap2/board-flash.h
+@@ -47,3 +47,14 @@ static inline void board_nand_init(struct mtd_partition *nand_parts,
+ {
+ }
+ #endif
++
++#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
++ defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
++extern void board_onenand_init(struct mtd_partition *nand_parts,
++ u8 nr_parts, u8 cs);
++#else
++static inline void board_onenand_init(struct mtd_partition *nand_parts,
++ u8 nr_parts, u8 cs)
++{
++}
++#endif
+--
+1.7.7.6
+
+
+_______________________________________________
+linux-arm-kernel mailing list
+linux-arm-kernel at lists.infradead.org
+http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex b/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
index a46bda6..d051c60 100644
--- a/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
+++ b/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
@@ -26,7 +26,14 @@ board.
\section{Kernel sources}
We will re-use the kernel sources downloaded and patched in the
-previous lab.
+previous lab. However, we will have to apply two additional patches
+that add NAND support for the IGEPv2 revision 6 board that we are
+using in this training:
+
+\begin{verbatim}
+cat ../linux-3.2-arm-omap2-make-board-onenand-init-visible-to-board-code.patch | patch -p1
+cat ../linux-3.2-arm-omap3-igep0020-add-support-for-micron-nand-flash.patch | patch -p1
+\end{verbatim}
\section{Cross-compiling environment setup}
-----------------------------------------------------------------------
Summary of changes:
...gep0020-add-support-for-micron-nand-flash.patch | 216 ++++++++++++++++++++
...-board-onenand-init-visible-to-board-code.patch | 130 ++++++++++++
.../sysdev-kernel-cross-compiling.tex | 9 +-
labs/sysdev-u-boot/sysdev-u-boot.tex | 12 +-
4 files changed, 365 insertions(+), 2 deletions(-)
create mode 100644 lab-data/sysdev/kernel/linux-3.2-arm-omap3-igep0020-add-support-for-micron-nand-flash.patch
create mode 100644 lab-data/sysdev/kernel/omap2-make-board-onenand-init-visible-to-board-code.patch
More information about the training-materials-updates
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