[U-Boot] U-Boot Digest, Vol 9, Issue 49
null
jimmy9696 at 163.com
Thu Feb 5 13:34:52 CET 2009
how can i download a bin file into nand flash in windows xp?
在2009-02-05，u-boot-request at lists.denx.de 写道：
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Today's Topics:
1. Re: [PATCH 3/9] i.MX31: support GPIO as a chip-select in the
mxc_spi driver (Guennadi Liakhovetski)
2. Re: [PATCH 4/9] A driver for the S6E63D6 SPI display
controller from Samsung (Guennadi Liakhovetski)
3. Re: [PATCH 1/2] flash/cfi_flash: Use virtual sector start
address, not phys (Stefan Roese)
4. [PATCH] cfi_flash: Silence compilation warning (Stefan Roese)
5. Re: [PATCH 4/9] A driver for the S6E63D6 SPI display
controller from Samsung (Guennadi Liakhovetski)
6. Re: [PATCH 1/2] flash/cfi_flash: Use virtual sector start
address, not phys (Stefan Roese)
7. [PATCH] cfi_flash: Fix typo in cfi_flash.c (Stefan Roese)
8. [cfi-flash] Please pull
git://www.denx.de/git/u-boot-cfi-flash.git (Stefan Roese)
9. Re: [PATCH 9/9] ARM: add an "eet" variant of the
imx31_phycore board (Guennadi Liakhovetski)
----------------------------------------------------------------------
Message: 1
Date: Thu, 5 Feb 2009 11:03:53 +0100 (CET)
From: Guennadi Liakhovetski <lg at denx.de>
Subject: Re: [U-Boot] [PATCH 3/9] i.MX31: support GPIO as a
chip-select in the mxc_spi driver
To: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Cc: U-Boot at lists.denx.de
Message-ID: <Pine.LNX.4.64.0902051102120.5553 at axis700.grange>
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Wed, 4 Feb 2009, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 17:59 Wed 04 Feb , Guennadi Liakhovetski wrote:
> >
> > + /*
> > + * Some SPI devices require active chip-select over multiple
> > + * transactions, we achieve this using a GPIO. Still, the SPI
> > + * controller has to be configured to use one of its own chipselects.
> > + * To use this feature you have to call spi_setup_slave() with
> > + * cs = internal_cs | (gpio << 8), and you have to use some unused
> > + * on this SPI controller cs between 0 and 3.
> > + */
> > + if (cs > 3) {
> > + mxcs->gpio = cs >> 8;
> > + cs &= 3;
> > + mx31_gpio_direction(mxcs->gpio, MX31_GPIO_DIRECTION_OUT);
> > + } else
> > + mxcs->gpio = -1;
> > +
> why not add a callback for the chipselect instead
> as example if you have to use a gpio extender it will simplest to implent
> instead of hack the SPI driver
and how shall I pass this callback to
struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
unsigned int max_hz, unsigned int mode)
?
Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
------------------------------
Message: 2
Date: Thu, 5 Feb 2009 11:19:38 +0100 (CET)
From: Guennadi Liakhovetski <lg at denx.de>
Subject: Re: [U-Boot] [PATCH 4/9] A driver for the S6E63D6 SPI display
controller from Samsung
To: Anatolij Gustschin <agust at denx.de>
Cc: U-Boot at lists.denx.de
Message-ID: <Pine.LNX.4.64.0902051117020.5553 at axis700.grange>
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Wed, 4 Feb 2009, Anatolij Gustschin wrote:
> Hi Guennadi,
>
> > +struct s6e63d6 {
> > + unsigned int bus;
> > + unsigned int cs;
> > + struct spi_slave *slave;
> > +};
>
> could we use "bus" and "cs" from struct spi_slave? "struct spi_slave"
> declares them already. Maybe we should drop struct s6e63d6 entirely and use
> struct spi_slave instead?
No, cs and bus here are input parameters, set up by the caller to
s6e63d6_init() and used by the latter to setup the SPI-slave. slave is
driver-"private" field, the caller doesn't need to know what is under
s6e63d6.
Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
------------------------------
Message: 3
Date: Thu, 5 Feb 2009 11:25:16 +0100
From: Stefan Roese <sr at denx.de>
Subject: Re: [U-Boot] [PATCH 1/2] flash/cfi_flash: Use virtual sector
start address, not phys
To: u-boot at lists.denx.de
Message-ID: <200902051125.16237.sr at denx.de>
Content-Type: text/plain; charset="iso-8859-1"
On Monday 02 February 2009, Becky Bruce wrote:
> include/flash.h was commented to say that the address in
> flash_info->start was a physical address. However, from u-boot's
> point of view, and looking at most flash code, it makes more
> sense for this to be a virtual address. So I corrected the
> comment to indicate that this was a virtual address.
>
> The only flash driver that was actually treating the address
> as physical was the mtd/cfi_flash driver. However, this code
> was using it inconsistently as it actually directly dereferenced
> the "start" element, while it used map_physmem to get a
> virtual address in other places. I changed this driver so
> that the code which initializes the info->start field calls
> map_physmem to get a virtual address, eliminating the need for
> further map_physmem calls. The code is now consistent.
>
> The *only* place a physical address should be used is when defining the
> flash banks list that is used to initialize the flash_info struct,
> usually found in the board config file.
Applied to cfi-flash/master. Thanks.
Best regards,
Stefan
=====================================================================
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
=====================================================================
------------------------------
Message: 4
Date: Thu, 5 Feb 2009 11:26:42 +0100
From: Stefan Roese <sr at denx.de>
Subject: [U-Boot] [PATCH] cfi_flash: Silence compilation warning
To: u-boot at lists.denx.de
Message-ID: <1233829602-10031-1-git-send-email-sr at denx.de>
Patch "flash/cfi_flash: Use virtual sector start address, not phys"
introduced a small compilation warning. This patch fixes it.
Signed-off-by: Stefan Roese <sr at denx.de>
---
drivers/mtd/cfi_flash.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 4cb5fb5..3a8f8e4 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -879,7 +879,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
int cnt;
int retcode;
void *src = cp;
- void *dst = dest;
+ void *dst = (void *)dest;
void *dst2 = dst;
int flag = 0;
uint offset = 0;
--
1.6.1.2
------------------------------
Message: 5
Date: Thu, 5 Feb 2009 11:33:58 +0100 (CET)
From: Guennadi Liakhovetski <lg at denx.de>
Subject: Re: [U-Boot] [PATCH 4/9] A driver for the S6E63D6 SPI display
controller from Samsung
To: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Cc: U-Boot at lists.denx.de
Message-ID: <Pine.LNX.4.64.0902051131450.5553 at axis700.grange>
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Wed, 4 Feb 2009, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 17:59 Wed 04 Feb , Guennadi Liakhovetski wrote:
> > +
> > +/*
> > + * Each transfer is performed as:
> > + * 1. chip-select active
> > + * 2. send 8-bit start code
> > + * 3. send 16-bit data
> > + * 4. chip-select inactive
> > + */
> > +static int send_word(struct spi_slave *spi, u8 rs, u16 data)
> > +{
> > + u32 buf8 = 0x70 | ID | (rs & 2);
> why?
That's how the start byte looks like:
01110<ID><RS><R/W>
rs is 0 for index or 1 for data, and R/W is 0 for write.
Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
------------------------------
Message: 6
Date: Thu, 5 Feb 2009 11:42:45 +0100
From: Stefan Roese <sr at denx.de>
Subject: Re: [U-Boot] [PATCH 1/2] flash/cfi_flash: Use virtual sector
start address, not phys
To: Kumar Gala <galak at kernel.crashing.org>
Cc: U-Boot List <u-boot at lists.denx.de>
Message-ID: <200902051142.45680.sr at denx.de>
Content-Type: text/plain; charset="iso-8859-1"
On Tuesday 03 February 2009, Kumar Gala wrote:
> On Feb 3, 2009, at 2:53 AM, Pieter wrote:
> >> static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
> >> unsigned int offset, void *addr)
> >> {
> >> - unsigned int byte_offset = offset * info->portwidth;
> >> -
> >> - unmap_physmem(addr, flash_sector_size(info, sect) - byte_offset);
> >> }
> >
> > <snip>
> >
> > Since "flash_unmap(flash_info_t *info, flash_sect_t sect,unsigned
> > int offset, void *addr)" function is empty after applying the patch,
> > should all function calls in the /drivers/mtd/cfi_flash.c file not
> > also be removed?
> >
> > cheers pieter
>
> I think its best to leave them alone for now. If in the future we
> really think flash_unmap isn't going to get called we can remove
> them. Stefan?
Fine with me.
Best regards,
Stefan
=====================================================================
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
=====================================================================
------------------------------
Message: 7
Date: Thu, 5 Feb 2009 11:45:30 +0100
From: Stefan Roese <sr at denx.de>
Subject: [U-Boot] [PATCH] cfi_flash: Fix typo in cfi_flash.c
To: u-boot at lists.denx.de
Message-ID: <1233830730-12262-1-git-send-email-sr at denx.de>
Patch "flash/cfi_flash: Use virtual sector start address, not phys"
introduced a small typo and compilation warning for systems with CFI
legacy support (e.g. hcu4). This patch fixes it.
Signed-off-by: Stefan Roese <sr at denx.de>
---
drivers/mtd/cfi_flash.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 3a8f8e4..bdfad98 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -1622,7 +1622,7 @@ static int flash_detect_legacy(phys_addr_t base, int banknum)
info->vendor = modes[i];
info->start[0] =
(ulong)map_physmem(base,
- info->portwith,
+ info->portwidth,
MAP_NOCACHE);
if (info->portwidth == FLASH_CFI_8BIT
&& info->interface == FLASH_CFI_X8X16) {
@@ -1640,7 +1640,7 @@ static int flash_detect_legacy(phys_addr_t base, int banknum)
if (jedec_flash_match(info, info->start[0]))
break;
else
- unmap_physmem(info->start[0],
+ unmap_physmem((void *)info->start[0],
MAP_NOCACHE);
}
}
--
1.6.1.2
------------------------------
Message: 8
Date: Thu, 5 Feb 2009 11:49:45 +0100
From: Stefan Roese <sr at denx.de>
Subject: [U-Boot] [cfi-flash] Please pull
git://www.denx.de/git/u-boot-cfi-flash.git
To: "U-Boot-Users" <u-boot at lists.denx.de>
Message-ID: <200902051149.45244.sr at denx.de>
Content-Type: text/plain; charset="utf-8"
The following changes since commit 9d8811c5bd2b7dd6307742cf22fbdb7953b6f816:
Wolfgang Denk (1):
Merge branch 'master' of git://git.denx.de/u-boot-usb
are available in the git repository at:
git://www.denx.de/git/u-boot-cfi-flash.git master
Becky Bruce (1):
flash/cfi_flash: Use virtual sector start address, not phys
Stefan Roese (3):
cfi_flash: Silence compilation warning
jedec_flash: Only use manufacturer defines from common flash.h
cfi_flash: Fix typo in cfi_flash.c
drivers/mtd/cfi_flash.c | 53 ++++++++++++++++++++------------------------
drivers/mtd/jedec_flash.c | 16 +++++--------
include/flash.h | 2 +-
3 files changed, 31 insertions(+), 40 deletions(-)
------------------------------
Message: 9
Date: Thu, 5 Feb 2009 11:51:20 +0100 (CET)
From: Guennadi Liakhovetski <lg at denx.de>
Subject: Re: [U-Boot] [PATCH 9/9] ARM: add an "eet" variant of the
imx31_phycore board
To: Wolfgang Denk <wd at denx.de>
Cc: U-Boot at lists.denx.de
Message-ID: <Pine.LNX.4.64.0902051149390.5553 at axis700.grange>
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Wed, 4 Feb 2009, Wolfgang Denk wrote:
> Dear Guennadi Liakhovetski,
>
> In message <Pine.LNX.4.64.0902042316110.6279 at axis700.grange> you wrote:
> >
> > > > +#ifdef BOARD_LATE_INIT
> > > CONFIG_?
> >
> > grep?:
> >
> > $ grep -r BOARD_LATE_INIT lib*
> > lib_arm/board.c:#ifdef BOARD_LATE_INIT
> > lib_nios2/board.c:#if defined(CONFIG_BOARD_LATE_INIT)
> > lib_sh/board.c:#ifdef BOARD_LATE_INIT
> > lib_sparc/board.c:#if defined(CONFIG_BOARD_LATE_INIT)
>
> Good idea to search - so you can fix the other occurances, too.
This is outside of the scope of this patch series, so, I'll put it on my
todo.
Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
------------------------------
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