From 907208c452999427cb2f43450308045bf8b42958 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 6 Jul 2017 10:23:22 +0200 Subject: powerpc: Partialy restore core of mpc8xx CS Systemes d'Information (CSSI) manufactures 8xx boards for critical communication systems. Those boards have been running U-Boot since 2010 and will have to be maintained until at least 2027. commit 5b8e76c35ec312a3f73126bd1a2d2c0965b98a9f ("powerpc, 8xx: remove support for 8xx") orphaned those boards by removing support for the mpc8xx CPU. This commit partially restores support for the 8xx, with the following limitations: - Restores support for MPC866 and MPC885 only - Does not restore IDE, PCMCIA, I2C, USB - Does not restore examples - Does not restore POST - Does not restore Ethernet on SCC - Does not restore console on SCC - Does not restore bedbug and kgdb support As the 866 and 885 do not support the following features, they are not restored either: - VIDEO / LCD - RTC clock The CPM uCODE patch is not restored either, because: - 866 and 885 already have support for I2C and SPI relocation without a uCODE patch - relocation of SMC, I2C or SPI is only needed for using SCCs for Ethernet or QMC The dynamic setup/calculation of clocks is removed, we expect the target being use with the clock and PLPRCR register defined in the configuration. All the clock settings for 8xx prior to 866 is removed as well as we now only support 866 and 885. This code is mature and addresses mature boards. Therefore all code enclosed in '#if 0/#endif' and '#if XX_DEBUG/#endif' is unneeded. The following files are not restored by this patch: - arch/powerpc/cpu/mpc8xx/bedbug_860.c - arch/powerpc/cpu/mpc8xx/fec.h - arch/powerpc/cpu/mpc8xx/kgdb.S - arch/powerpc/cpu/mpc8xx/plprcr_write.S - arch/powerpc/cpu/mpc8xx/scc.c - arch/powerpc/cpu/mpc8xx/upatch.c - arch/powerpc/cpu/mpc8xx/video.c - arch/powerpc/include/asm/status_led.h - arch/powerpc/lib/ide.c - arch/powerpc/lib/ide.h - doc/README.MPC866 - drivers/pcmcia/mpc8xx_pcmcia.c - drivers/rtc/mpc8xx.c - drivers/usb/gadget/mpc8xx_udc.c - drivers/video/mpc8xx_lcd.c - examples/standalone/test_burst.c - examples/standalone/test_burst.h - examples/standalone/test_burst_lib.S - examples/standalone/timer.c - include/mpc823_lcd.h - include/usb/mpc8xx_udc.h - post/cpu/mpc8xx/Makefile - post/cpu/mpc8xx/cache.c - post/cpu/mpc8xx/cache_8xx.S - post/cpu/mpc8xx/ether.c - post/cpu/mpc8xx/spr.c - post/cpu/mpc8xx/uart.c - post/cpu/mpc8xx/usb.c - post/cpu/mpc8xx/watchdog.c Some of the restored files are not located in a proper location. In order to keep traceability of the changes, they will be moved to their correct location and moved to Kconfig in a followup patch. This patch also declares CSSI as point of contact for the update of the 8xx platform, as those boards are the only ones still being maintained on the 8xx area. A later patch will add those boards to the tree. Signed-off-by: Christophe Leroy --- cmd/reginfo.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 57 insertions(+), 2 deletions(-) (limited to 'cmd/reginfo.c') diff --git a/cmd/reginfo.c b/cmd/reginfo.c index 8e4bec8c4b..850f28cabc 100644 --- a/cmd/reginfo.c +++ b/cmd/reginfo.c @@ -7,7 +7,9 @@ #include #include -#if defined(CONFIG_MPC86xx) +#if defined(CONFIG_8xx) +#include +#elif defined(CONFIG_MPC86xx) extern void mpc86xx_reginfo(void); #elif defined(CONFIG_MPC85xx) extern void mpc85xx_reginfo(void); @@ -16,7 +18,60 @@ extern void mpc85xx_reginfo(void); static int do_reginfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { -#if defined(CONFIG_MPC86xx) +#if defined(CONFIG_8xx) + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + volatile sysconf8xx_t *sysconf = &immap->im_siu_conf; + volatile sit8xx_t *timers = &immap->im_sit; + + /* Hopefully more PowerPC knowledgable people will add code to display + * other useful registers + */ + + printf ("\nSystem Configuration registers\n" + + "\tIMMR\t0x%08X\n", get_immr(0)); + + printf("\tSIUMCR\t0x%08X", sysconf->sc_siumcr); + printf("\tSYPCR\t0x%08X\n",sysconf->sc_sypcr); + + printf("\tSWT\t0x%08X", sysconf->sc_swt); + printf("\tSWSR\t0x%04X\n", sysconf->sc_swsr); + + printf("\tSIPEND\t0x%08X\tSIMASK\t0x%08X\n", + sysconf->sc_sipend, sysconf->sc_simask); + printf("\tSIEL\t0x%08X\tSIVEC\t0x%08X\n", + sysconf->sc_siel, sysconf->sc_sivec); + printf("\tTESR\t0x%08X\tSDCR\t0x%08X\n", + sysconf->sc_tesr, sysconf->sc_sdcr); + + printf ("Memory Controller Registers\n" + + "\tBR0\t0x%08X\tOR0\t0x%08X \n", memctl->memc_br0, memctl->memc_or0); + printf("\tBR1\t0x%08X\tOR1\t0x%08X \n", memctl->memc_br1, memctl->memc_or1); + printf("\tBR2\t0x%08X\tOR2\t0x%08X \n", memctl->memc_br2, memctl->memc_or2); + printf("\tBR3\t0x%08X\tOR3\t0x%08X \n", memctl->memc_br3, memctl->memc_or3); + printf("\tBR4\t0x%08X\tOR4\t0x%08X \n", memctl->memc_br4, memctl->memc_or4); + printf("\tBR5\t0x%08X\tOR5\t0x%08X \n", memctl->memc_br5, memctl->memc_or5); + printf("\tBR6\t0x%08X\tOR6\t0x%08X \n", memctl->memc_br6, memctl->memc_or6); + printf("\tBR7\t0x%08X\tOR7\t0x%08X \n", memctl->memc_br7, memctl->memc_or7); + printf ("\n" + "\tmamr\t0x%08X\tmbmr\t0x%08X \n", + memctl->memc_mamr, memctl->memc_mbmr ); + printf("\tmstat\t0x%08X\tmptpr\t0x%08X \n", + memctl->memc_mstat, memctl->memc_mptpr ); + printf("\tmdr\t0x%08X \n", memctl->memc_mdr); + + printf ("\nSystem Integration Timers\n" + "\tTBSCR\t0x%08X\tRTCSC\t0x%08X \n", + timers->sit_tbscr, timers->sit_rtcsc); + printf("\tPISCR\t0x%08X \n", timers->sit_piscr); + + /* + * May be some CPM info here? + */ + +#elif defined(CONFIG_MPC86xx) mpc86xx_reginfo(); #elif defined(CONFIG_MPC85xx) -- cgit