[U-Boot] [PATCH v2 6/6] arm: socfpga: a10: move SPL stack size to Kconfig

[Chee, Tien Fong <tien.fong.chee@intel.com>]

On Tue, 2019-03-19 at 17:29 +0100, Simon Goldschmidt wrote:
> Am 19.03.2019 um 17:19 schrieb Chee, Tien Fong:
> > 
> > On Fri, 2019-03-15 at 21:13 +0100, Simon Goldschmidt wrote:
> > > 
> > > Instead of fixing the SPL stack to 64 KiB in the board config
> > > header
> > > via
> > > CONFIG_SYS_SPL_MALLOC_SIZE, let's just use
> > > CONFIG_SPL_SYS_MALLOC_F_LEN
> > > in the defconfig.
> > > 
> > > This also has the advandage that it removes sub-mach specific
> > > ifdefs
> > > in
> > > socfpga_common.h.
> > > 
> > > Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com
> > > >
> > > ---
> > Hi Simon,
> > 
> > I found the culprit in patch[5], you cannot put mem_malloc_init in
> > spl_common_init function because spl_common_init would be called in
> > board_init_f, then board_init_f would call mem_malloc_init,
> > mem_malloc_init would store start and end addresses to few global
> > variables such as mem_malloc_start, mem_malloc_end and
> > mem_malloc_brk.
> > By that time, global variables are unavailable yet.
> Thanks for testing. Patch 2/6 should make sure global variables are 
> available in board_init_f by clearing bss *before* calling that 
> function, not *after* calling it. Because technicaly, global
> variables 
> are always available for a10-SPL as they are located in SRAM. They
> only 
> got cleared after board_init_f...
Yes, you are right, memset would clear .BSS after mem_malloc_init.
> 
> Which gets me to my error: I forgot to enable the newly added 
> CONFIG_SPL_CLEAR_BSS_F in this patch. Could you probably try again
> with 
> CONFIG_SPL_CLEAR_BSS_F enabled? That would be great!
Tested, passing. May be force enabling it or compile error if full
malloc is used?

Thanks.
TF.
> 
> Regards,
> Simon
> 
> > 
> > 
> > Thanks.
> > TF
> > 
> > > 
> > > 
> > > Changes in v2: None
> > > 
> > >   configs/socfpga_arria10_defconfig |  1 +
> > >   include/configs/socfpga_common.h  | 14 --------------
> > >   2 files changed, 1 insertion(+), 14 deletions(-)
> > > 
> > > diff --git a/configs/socfpga_arria10_defconfig
> > > b/configs/socfpga_arria10_defconfig
> > > index f321a0ac3b..8d0479cc05 100644
> > > --- a/configs/socfpga_arria10_defconfig
> > > +++ b/configs/socfpga_arria10_defconfig
> > > @@ -2,6 +2,7 @@ CONFIG_ARM=y
> > >   CONFIG_ARCH_SOCFPGA=y
> > >   CONFIG_SYS_TEXT_BASE=0x01000040
> > >   CONFIG_SYS_MALLOC_F_LEN=0x2000
> > > +CONFIG_SPL_SYS_MALLOC_F_LEN=0x10000
> > >   CONFIG_TARGET_SOCFPGA_ARRIA10_SOCDK=y
> > >   CONFIG_SPL=y
> > >   CONFIG_IDENT_STRING="socfpga_arria10"
> > > diff --git a/include/configs/socfpga_common.h
> > > b/include/configs/socfpga_common.h
> > > index 181af9b646..16c83900c3 100644
> > > --- a/include/configs/socfpga_common.h
> > > +++ b/include/configs/socfpga_common.h
> > > @@ -251,16 +251,6 @@ unsigned int
> > > cm_get_qspi_controller_clk_hz(void);
> > >   #define CONFIG_SPL_TEXT_BASE		CONFIG_SYS_INIT_RAM
> > > _ADDR
> > >   #define CONFIG_SPL_MAX_SIZE		CONFIG_SYS_INIT_RAM_
> > > SIZE
> > >   
> > > -#if defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
> > > -/* SPL memory allocation configuration, this is for FAT
> > > implementation */
> > > -#ifndef CONFIG_SYS_SPL_MALLOC_START
> > > -#define CONFIG_SYS_SPL_MALLOC_SIZE	0x00010000
> > > -#define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SYS_INIT_RAM_
> > > SIZE
> > > - \
> > > -					 CONFIG_SYS_SPL_MALLOC_S
> > > IZE
> > > + \
> > > -					 CONFIG_SYS_INIT_RAM_ADD
> > > R)
> > > -#endif
> > > -#endif
> > > -
> > >   /* SPL SDMMC boot support */
> > >   #ifdef CONFIG_SPL_MMC_SUPPORT
> > >   #if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
> > > @@ -294,11 +284,7 @@ unsigned int
> > > cm_get_qspi_controller_clk_hz(void);
> > >   /*
> > >    * Stack setup
> > >    */
> > > -#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> > >   #define CONFIG_SPL_STACK		CONFIG_SYS_INIT_SP_ADDR
> > > -#elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
> > > -#define CONFIG_SPL_STACK		CONFIG_SYS_SPL_MALLOC_ST
> > > ART
> > > -#endif
> > >   
> > >   /* Extra Environment */
> > >   #ifndef CONFIG_SPL_BUILD