On 6/26/19 12:54 PM, Jagan Teki wrote: > On Wed, Jun 26, 2019 at 4:07 PM Stefan Roese <s...@denx.de> wrote: >> >> On 26.06.19 11:53, Suniel Mahesh wrote: >>> Hi, >>> >>> I am trying to convert watchdog driver(omap3_wdt) on TI AM33XX platform to >>> Driver Model. >>> Since DM is also enabled in SPL, size of SPL image generated(with watchdog >>> DM enabled) is >>> bigger compared to the SRAM size(.u_boot_list section doesn't fit in the >>> region alloted) >>> and build is failing with the following error: >>> >>> LD spl/drivers/usb/gadget/built-in.o >>> LD spl/drivers/usb/musb-new/built-in.o >>> LD spl/drivers/built-in.o >>> LD spl/u-boot-spl >>> arm-linux-ld.bfd: u-boot-spl section `.u_boot_list' will not fit in region >>> `.sram' >>> arm-linux-ld.bfd: region `.sram' overflowed by 48 bytes >>> make[1]: *** [spl/u-boot-spl] Error 1 >>> make: *** [spl/u-boot-spl] Error 2 >>> >>> The SRAM size in the device is 130047 bytes, of which 110592 bytes are >>> allocated for SPL >>> Image, 6144 bytes for stack and the rest 12799 bytes for RAM Exec vectors, >>> tracing data >>> and static variables. >>> >>> Maximum SPL image size is fixed at 110592 bytes >>> >>> SPL size without Watchdog driver model is 110880 bytes. >>> >>> So, the reason for such error is straight forward. >>> >>> I can think of two possible approaches (might be wrong): >>> >>> 1. either disable DM in SPL for watchdog ? >>> (dm: mmc: Allow disabling driver model in SPL - by Simon Glass) >>> >>> 2. The stack allocated for SPL in SRAM is 6KB and 12799 bytes for RAM Exec >>> vectors, >>> tracing data and static variables. can we do something here, by borrowing >>> some bytes ? >>> >>> Or any possible solutions ? >> >> You could also disable the watchdog in SPL and only enable it >> later in U-Boot proper. > > May be his requirement is to reset the watchdog if SPL hang or something.
Non-DM WDT support can do that just fine. -- Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
