Another minimum size report. If the text size after subtracting the FDT blob is below 64K, the BSP is not in the report. The adjusted size is reported.
It looks like some significant percentage of those over 64k are managing to pull in printf or something in the family. I wonder if we should ban printf() from BSPs and drivers in favor of printk? --joel On Wed, May 26, 2021 at 1:14 PM Christian Mauderer <o...@c-mauderer.de> wrote: > > > On 26/05/2021 19:23, Joel Sherrill wrote: > > > > > > On Wed, May 26, 2021 at 6:02 AM Sebastian Huber > > <sebastian.hu...@embedded-brains.de > > <mailto:sebastian.hu...@embedded-brains.de>> wrote: > > > > On 25/05/2021 20:33, Christian Mauderer wrote: > > > > > >> > > >> I thought Sebastian added a "malloc" for the BSP to use before > the > > >> heap was initialized. But I don't remember the name. Am I > > remembering > > >> correctly? > > > > > > I don't really know that malloc. But I doubt that it works that > > early. > > > Again: Copying the FDT is one of the first things that these BSPs > > do. If > > > you want to know the exact location: For ARM it's here: > > > > > > > > https://git.rtems.org/rtems/tree/bsps/arm/shared/start/start.S#n325 > > <https://git.rtems.org/rtems/tree/bsps/arm/shared/start/start.S#n325 > > > > > > > > So it's really basic setup before that. It's interrupt stack, > > switching > > > modes, setup stack pointer and then it's already copy FDT. > > > > Yes, there is an early "malloc". This is _Memory_Allocate() using > > _Memory_Get(). However, for the device tree copy this is not early > > enough. We don't know the device tree location provided by the boot > > loader. It could be somewhere in the memory area used by the > > application. So, it is important to copy this very early into a fixed > > location. Also, the device tree may be used to get the size of the > > memory provided by _Memory_Get(). > > > > > > I assume read-only is only from the perspective of higher level > > language code. Is it possible that being read-only it could be > > mapped to Flash? > > If the code is mapped to flash, the BSP is broken. I think there are > options for such a case so that the FDT is placed in another section. > Not sure whether any BSP is using them. > > This kind of copy should be only done on BSPs that run out of RAM. Like > I said earlier: Normally that's the case for BSPs that are loaded by > U-Boot. > > > > > For the purposes of minimum size analysis, I will subtract the > > size of the FDT block from the minimum .text size and if it > > is still over 64, flag it. > > Sounds reasonable. > > Best regards > > Christian > > > > > --joel > > > > > > -- > > embedded brains GmbH > > Herr Sebastian HUBER > > Dornierstr. 4 > > 82178 Puchheim > > Germany > > email: sebastian.hu...@embedded-brains.de > > <mailto:sebastian.hu...@embedded-brains.de> > > phone: +49-89-18 94 741 - 16 > > fax: +49-89-18 94 741 - 08 > > > > Registergericht: Amtsgericht München > > Registernummer: HRB 157899 > > Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas > Dörfler > > Unsere Datenschutzerklärung finden Sie hier: > > https://embedded-brains.de/datenschutzerklaerung/ > > <https://embedded-brains.de/datenschutzerklaerung/> > > >
======= arm-beagleboardorig-minimum.exe 354960 in text ===== text data bss dec hex filename 354960 1368 263884740 264241068 fbfffac arm-beagleboardorig-minimum.exe Text Size Adjusted for bsp_fdt_blob: 92816 80006b94 00000d2c T _IO_Vprintf 801016c0 00001000 B _ISR_Stack_area_begin 800543a8 0000157c r ti_padconf_devmap 8000e688 0000170c T _dtoa_r 8000bdbc 0000270c T _svfprintf_r ======= arm-beagleboardxm-minimum.exe 354960 in text ===== text data bss dec hex filename 354960 1368 263884740 264241068 fbfffac arm-beagleboardxm-minimum.exe Text Size Adjusted for bsp_fdt_blob: 92816 80006b94 00000d2c T _IO_Vprintf 801016c0 00001000 B _ISR_Stack_area_begin 800543a8 0000157c r ti_padconf_devmap 8000e688 0000170c T _dtoa_r 8000bdbc 0000270c T _svfprintf_r ======= arm-beagleboneblack-minimum.exe 354960 in text ===== text data bss dec hex filename 354960 1368 263884740 264241068 fbfffac arm-beagleboneblack-minimum.exe Text Size Adjusted for bsp_fdt_blob: 92816 80006b94 00000d2c T _IO_Vprintf 801016c0 00001000 B _ISR_Stack_area_begin 800543a8 0000157c r ti_padconf_devmap 8000e688 0000170c T _dtoa_r 8000bdbc 0000270c T _svfprintf_r ======= arm-beaglebonewhite-minimum.exe 354960 in text ===== text data bss dec hex filename 354960 1368 263884740 264241068 fbfffac arm-beaglebonewhite-minimum.exe Text Size Adjusted for bsp_fdt_blob: 92816 80006b94 00000d2c T _IO_Vprintf 801016c0 00001000 B _ISR_Stack_area_begin 800543a8 0000157c r ti_padconf_devmap 8000e688 0000170c T _dtoa_r 8000bdbc 0000270c T _svfprintf_r ======= arm-nucleo-h743zi-minimum.exe 73680 in text ===== text data bss dec hex filename 73680 504 34135552 34209736 209ffc8 arm-nucleo-h743zi-minimum.exe 70004499 000007b8 T _IO_Vprintf 70003095 00000a6c T HAL_RCCEx_PeriphCLKConfig 700126d8 00000f00 B bsp_interrupt_handler_table 700138c0 00001000 B _ISR_Stack_area_begin 700065e1 00001528 T UART_SetConfig ======= arm-stm32h7-minimum.exe 73680 in text ===== text data bss dec hex filename 73680 504 34135552 34209736 209ffc8 arm-stm32h7-minimum.exe 70004499 000007b8 T _IO_Vprintf 70003095 00000a6c T HAL_RCCEx_PeriphCLKConfig 700126d8 00000f00 B bsp_interrupt_handler_table 700138c0 00001000 B _ISR_Stack_area_begin 700065e1 00001528 T UART_SetConfig ======= i386-pc386-minimum.exe 100328 in text ===== text data bss dec hex filename 100328 9148 24320 133796 20aa4 i386-pc386-minimum.exe 00120b00 00001000 B _ISR_Stack_area_begin 001128dc 000011dd T _dtoa_r 0011c520 00001400 b idtHdl 0011de20 00002710 B i386_gdb_remcomStack 0010fd50 000029e3 T _svfprintf_r ======= i386-pc486-minimum.exe 108836 in text ===== text data bss dec hex filename 108836 9148 24320 142304 22be0 i386-pc486-minimum.exe 00122c40 00001000 B _ISR_Stack_area_begin 00114a0c 000011dd T _dtoa_r 0011e660 00001400 b idtHdl 0011ff60 00002710 B i386_gdb_remcomStack 00111e80 000029e3 T _svfprintf_r ======= i386-pc586-minimum.exe 111956 in text ===== text data bss dec hex filename 111956 9148 24320 145424 23810 i386-pc586-minimum.exe 00123880 00001000 B _ISR_Stack_area_begin 00115290 0000138f T _dtoa_r 0011f280 00001400 b idtHdl 00120b80 00002710 B i386_gdb_remcomStack 00112490 00002be8 T _svfprintf_r ======= i386-pc586-sse-minimum.exe 112148 in text ===== text data bss dec hex filename 112148 9372 24256 145776 23970 i386-pc586-sse-minimum.exe 001239c0 00001000 B _ISR_Stack_area_begin 00115310 0000138f T _dtoa_r 0011f3a0 00001400 b idtHdl 00120ca0 00002710 B i386_gdb_remcomStack 00112510 00002be8 T _svfprintf_r ======= i386-pc686-minimum.exe 114612 in text ===== text data bss dec hex filename 114612 9148 24320 148080 24270 i386-pc686-minimum.exe 00123300 00001000 B _ISR_Stack_area_begin 00115ca0 0000138f T _dtoa_r 0011ed00 00001400 b idtHdl 00120600 00002710 B i386_gdb_remcomStack 00112ea0 00002be8 T _svfprintf_r ======= i386-pcp4-minimum.exe 103344 in text ===== text data bss dec hex filename 103344 9436 24256 137036 2174c i386-pcp4-minimum.exe 001217c0 00001000 B _ISR_Stack_area_begin 001134ec 000011dd T _dtoa_r 0011d180 00001400 b idtHdl 0011ea80 00002710 B i386_gdb_remcomStack 00110960 000029e3 T _svfprintf_r ======= mips-malta-minimum.exe 129820 in text ===== text data bss dec hex filename 129820 1024 11872 142716 22d7c mips-malta-minimum.exe 8002bc14 000005d4 T rtems_termios_enqueue_raw_characters 80018938 00000788 t RBTree_Control_RB_REMOVE_COLOR 8001ed08 00000e88 T _IO_Vprintf 80030d80 00002000 B _ISR_Stack_area_begin 80032d80 00002000 B _ISR_Stack_area_end ======= powerpc-beatnik-minimum.exe 154493 in text ===== text data bss dec hex filename 154493 23912 92876 271281 423b1 powerpc-beatnik-minimum.exe 00009954 00000bfc t setbat 000193dc 0000106c T _IO_Vprintf 0001f5fc 00001398 T _dtoa_r 0001c66c 000029c8 T _vfprintf_r 000412a0 00004000 B _ISR_Stack_area_begin FOUND: __wrap_printf() FOUND: close() ======= powerpc-mcp750-minimum.exe 130977 in text ===== text data bss dec hex filename 130977 24380 380496 535853 82d2d powerpc-mcp750-minimum.exe 0008aee0 00002000 B _ISR_Stack_area_begin 00016dc8 000029bc T _vfprintf_r 00086de0 00003000 b log_page_pool 00080050 00006a0c B residualCopy 00060000 00020000 b cc_memory FOUND: __wrap_printf() FOUND: close() ======= powerpc-mtx603e-minimum.exe 130673 in text ===== text data bss dec hex filename 130673 24324 380496 535493 82bc5 powerpc-mtx603e-minimum.exe 0008aee0 00002000 B _ISR_Stack_area_begin 00016d4c 00002988 T _vfprintf_r 00086de0 00003000 b log_page_pool 00080050 00006a0c B residualCopy 00060000 00020000 b cc_memory FOUND: __wrap_printf() FOUND: close() ======= powerpc-mvme2100-minimum.exe 124253 in text ===== text data bss dec hex filename 124253 22916 380484 527653 80d25 powerpc-mvme2100-minimum.exe 0008aec0 00002000 B _ISR_Stack_area_begin 000156ec 00002988 T _vfprintf_r 00086de0 00003000 b log_page_pool 00080050 00006a0c B residualCopy 00060000 00020000 b cc_memory FOUND: __wrap_printf() FOUND: close() ======= powerpc-mvme2307-minimum.exe 131029 in text ===== text data bss dec hex filename 131029 24240 380496 535765 82cd5 powerpc-mvme2307-minimum.exe 0008aee0 00002000 B _ISR_Stack_area_begin 00016ea8 000029e8 T _vfprintf_r 00086de0 00003000 b log_page_pool 00080050 00006a0c B residualCopy 00060000 00020000 b cc_memory FOUND: __wrap_printf() FOUND: close() ======= powerpc-mvme3100-minimum.exe 168173 in text ===== text data bss dec hex filename 168173 27216 25081 220470 35d36 powerpc-mvme3100-minimum.exe 00016174 0000107c T _IO_Vprintf 0001f9dc 0000171c T _dtoa_r 00019ea4 00002a50 T _svfprintf_r 0001c8fc 00002b18 T _vfprintf_r 00035a80 00004000 B _ISR_Stack_area_begin FOUND: __wrap_printf() FOUND: close() ======= powerpc-mvme5500-minimum.exe 121013 in text ===== text data bss dec hex filename 121013 19128 93696 233837 3916d powerpc-mvme5500-minimum.exe 00036d54 00000de4 b rtemsIrq 000136a4 00001088 T _IO_Vprintf 00018ca4 00001398 T _dtoa_r 00015d14 000029c8 T _vfprintf_r 000386a0 00004000 B _ISR_Stack_area_begin FOUND: __wrap_printf() FOUND: close() ======= powerpc-qemuprep-altivec-minimum.exe 126669 in text ===== text data bss dec hex filename 126669 23060 379760 529489 81451 powerpc-qemuprep-altivec-minimum.exe 0008ac00 00002000 B _ISR_Stack_area_begin 00015ed0 000029c8 T _vfprintf_r 00086de0 00003000 b log_page_pool 00080050 00006a0c B residualCopy 00060000 00020000 b cc_memory FOUND: __wrap_printf() FOUND: close() ======= powerpc-qemuprep-minimum.exe 123765 in text ===== text data bss dec hex filename 123765 22980 379760 526505 808a9 powerpc-qemuprep-minimum.exe 0008ac00 00002000 B _ISR_Stack_area_begin 000154c0 000029bc T _vfprintf_r 00086de0 00003000 b log_page_pool 00080050 00006a0c B residualCopy 00060000 00020000 b cc_memory FOUND: __wrap_printf() FOUND: close() ======= powerpc-qoriq_e6500_64-minimum.exe 331076 in text ===== text data bss dec hex filename 331076 1304 519814736 520147116 1f00d0ac powerpc-qoriq_e6500_64-minimum.exe Text Size Adjusted for bsp_fdt_blob: 68932 00000000050105e0 00000000000005d0 b _Thread_Objects 0000000000009e10 0000000000000700 T _CPU_Exception_frame_print 000000000000b7f0 0000000000000ee4 T _IO_Vprintf 0000000005013600 0000000000002000 B _ISR_Stack_area_begin 0000000005010d68 0000000000002500 B bsp_interrupt_handler_table
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