Hi Tom, On 12/06/11 17:49, Tom Rini wrote: > From: Vaibhav Hiremath <hvaib...@ti.com> > > Please note that NOR Flash is located on Application board and requires > hardware modification to get NOR boot mode working. > > NOR Flash boot mode configuration - > > - From baseboard remove R235 resistor. > - Set switch S11.3 position to "ON" > - Set S7 switch position to > 1 2 3 4 5 > ----------------- > on off off off off > > Please note that, once you remove R235 resistor from the baseboard, you > will not be able to boot from NAND without Application board. > The GPMC_nCS0 is now routed through Application board. > > Please note that, <Rev4 revision of Application board doesn't > work with NOR Flash due to HW issue. > > Signed-off-by: Vaibhav Hiremath <hvaib...@ti.com> > Signed-off-by: Tom Rini <tr...@ti.com> > --- > arch/arm/cpu/armv7/omap3/mem.c | 61 +++++++++++++++++++++++++++----- > arch/arm/include/asm/arch-omap3/mem.h | 15 +++++--- > board/logicpd/am3517evm/am3517evm.h | 2 +- > 3 files changed, 61 insertions(+), 17 deletions(-) > > diff --git a/arch/arm/cpu/armv7/omap3/mem.c b/arch/arm/cpu/armv7/omap3/mem.c > index 4a8c025..4ad3d12 100644 > --- a/arch/arm/cpu/armv7/omap3/mem.c > +++ b/arch/arm/cpu/armv7/omap3/mem.c > @@ -51,6 +51,17 @@ static const u32 gpmc_m_nand[GPMC_MAX_REG] = { > > #endif > > +#if defined (CONFIG_CMD_FLASH) > +static const u32 gpmc_nor[GPMC_MAX_REG] = { > + STNOR_GPMC_CONFIG1, > + STNOR_GPMC_CONFIG2, > + STNOR_GPMC_CONFIG3, > + STNOR_GPMC_CONFIG4, > + STNOR_GPMC_CONFIG5, > + STNOR_GPMC_CONFIG6, 0 > +}; > +#endif
This does not seem to be the right place for these settings... I think those must be board specific. > + > #if defined(CONFIG_CMD_ONENAND) > static const u32 gpmc_onenand[GPMC_MAX_REG] = { > ONENAND_GPMC_CONFIG1, > @@ -118,21 +129,34 @@ void enable_gpmc_cs_config(const u32 *gpmc_config, > struct gpmc_cs *cs, u32 base, > sdelay(2000); > } > > -/***************************************************** > +/* > * gpmc_init(): init gpmc bus > - * Init GPMC for x16, MuxMode (SDRAM in x32). > - * This code can only be executed from SRAM or SDRAM. > - *****************************************************/ > + * Init GPMC for x16, MuxMode (SDRAM in x32). This code can only be > + * executed from SRAM or SDRAM. In the common case, we will disable > + * and then configure chip select 0 for our needs (NAND or OneNAND). > + * However, on the AM3517 EVM the way that NOR can be exposed requires us > + * to rethink this. When NOR is enabled, it will be chip select 0 if > + * we are booting from NOR or chip select 2 otherwise. This requires us > + * to check the value we get from the SYSBOOT pins. All the above looks like board specific... > + */ > void gpmc_init(void) > { > /* putting a blanket check on GPMC based on ZeBu for now */ > gpmc_cfg = (struct gpmc *)GPMC_BASE; > -#if defined(CONFIG_CMD_NAND) || defined(CONFIG_CMD_ONENAND) > +#if defined(CONFIG_CMD_NAND) || defined(CONFIG_CMD_ONENAND) || \ > + (defined(CONFIG_OMAP3_AM3517EVM) && defined(CONFIG_SYS_HAS_NORFLASH)) > const u32 *gpmc_config = NULL; > u32 base = 0; > - u32 size = 0; > + u32 sz = 0; > #endif > u32 config = 0; > + u32 nor_boot = 0; > + > +#if defined(CONFIG_OMAP3_AM3517EVM) && defined(CONFIG_SYS_HAS_NORFLASH) > + /* 0xD means NOR boot on AM35x */ > + if (get_boot_type() == 0xD) > + nor_boot = 1; > +#endif > > /* global settings */ > writel(0, &gpmc_cfg->irqenable); /* isr's sources masked */ > @@ -146,14 +170,31 @@ void gpmc_init(void) > gpmc_config = gpmc_m_nand; > > base = PISMO1_NAND_BASE; > - size = PISMO1_NAND_SIZE; > - enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[0], base, size); > + sz = PISMO1_NAND_SIZE; > + if (!nor_boot) > + enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[0], base, sz); > + else > + enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[2], base, sz); > + > #endif > > #if defined(CONFIG_CMD_ONENAND) > gpmc_config = gpmc_onenand; > base = PISMO1_ONEN_BASE; > - size = PISMO1_ONEN_SIZE; > - enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[0], base, size); > + sz = PISMO1_ONEN_SIZE; > + if (!nor_boot) > + enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[0], base, sz); > + else > + enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[2], base, sz); > + > +#endif > + > +#if defined(CONFIG_OMAP3_AM3517EVM) && defined(CONFIG_SYS_HAS_NORFLASH) > + /* NOR - CS2 */ > + gpmc_config = gpmc_nor; > + base = DEBUG_BASE; > + sz = GPMC_SIZE_64M; > + if (!nor_boot) > + enable_gpmc_cs_config(gpmc_nor, &gpmc_cfg->cs[2], base, sz); > #endif > } All the above look very hackish... You just bring board specific code into a common location. I don't think we should be doing it this way. Instead, change the gpmc_init() function signature to get a parameter(s), so it will be a generic function, that will initialize the right stuff according to the parameters and will not have this board specific ifdeffery crap. > diff --git a/arch/arm/include/asm/arch-omap3/mem.h > b/arch/arm/include/asm/arch-omap3/mem.h > index 5fd02d4..2f52481 100644 > --- a/arch/arm/include/asm/arch-omap3/mem.h > +++ b/arch/arm/include/asm/arch-omap3/mem.h > @@ -329,12 +329,15 @@ enum { > #define M_NAND_GPMC_CONFIG6 0x1f0f0A80 > #define M_NAND_GPMC_CONFIG7 0x00000C44 > > -#define STNOR_GPMC_CONFIG1 0x3 > -#define STNOR_GPMC_CONFIG2 0x00151501 > -#define STNOR_GPMC_CONFIG3 0x00060602 > -#define STNOR_GPMC_CONFIG4 0x11091109 > -#define STNOR_GPMC_CONFIG5 0x01141F1F > -#define STNOR_GPMC_CONFIG6 0x000004c4 > +/* > + * Configuration required for AM3517EVM PC28F640P30B85 Flash > + */ > +#define STNOR_GPMC_CONFIG1 0x00001210 > +#define STNOR_GPMC_CONFIG2 0x00101001 > +#define STNOR_GPMC_CONFIG3 0x00020201 > +#define STNOR_GPMC_CONFIG4 0x0f031003 > +#define STNOR_GPMC_CONFIG5 0x000f1111 > +#define STNOR_GPMC_CONFIG6 0x0f030080 I see also: arch/arm/cpu/armv7/omap3/lowlevel_init.S:184: .word STNOR_GPMC_CONFIG3 arch/arm/cpu/armv7/omap3/lowlevel_init.S:188: .word STNOR_GPMC_CONFIG4 arch/arm/cpu/armv7/omap3/lowlevel_init.S:190: .word STNOR_GPMC_CONFIG5 I haven't looked into this, but will your change break anything else? > > #define SIBNOR_GPMC_CONFIG1 0x1200 > #define SIBNOR_GPMC_CONFIG2 0x001f1f00 > diff --git a/board/logicpd/am3517evm/am3517evm.h > b/board/logicpd/am3517evm/am3517evm.h > index 68d746c..17bb78d 100644 > --- a/board/logicpd/am3517evm/am3517evm.h > +++ b/board/logicpd/am3517evm/am3517evm.h > @@ -327,7 +327,7 @@ const omap3_sysinfo sysinfo = { > MUX_VAL(CP(SYS_CLKREQ), (IEN | PTD | DIS | M0)) \ > MUX_VAL(CP(SYS_NIRQ), (IEN | PTU | EN | M0)) \ > /*SYS_nRESWARM */\ > - MUX_VAL(CP(SYS_NRESWARM), (IDIS | PTU | DIS | M4)) \ > + MUX_VAL(CP(SYS_NRESWARM), (IDIS | PTU | EN | M4)) \ > /* - GPIO30 */\ > MUX_VAL(CP(SYS_BOOT0), (IEN | PTD | DIS | M4)) /*GPIO_2*/\ > /* - PEN_IRQ */\ -- Regards, Igor. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot