PowerQUICC ProcessorsのトピックRe: I need write MPC8306 interrupt function by c language in Uboot. But I cann't find a handbook to describe it. https://community.nxp.com/t5/PowerQUICC-Processors/I-need-write-MPC8306-interrupt-function-by-c-language-in-Uboot/m-p/262150#M452 <HTML><HEAD></HEAD><BODY><P>In u-boot, code or variable addresses cannot be decided when compiling, GOT is used to solve this problem.</P><P>STARG_GOT is used to define the start of the table, END_GOT is used to define the end of the table, </P><P>GOT_ENTRY is used to write the offset into the table and "GOT" is used for reading the offset from the table.</P><P>Please refer to cpu/mpc83xx/u-boot.lds for _FIXUP_TABLE_ defination.</P></BODY></HTML> Thu, 02 Jan 2014 06:05:19 GMT yipingwang 2014-01-02T06:05:19Z I need write MPC8306 interrupt function by c language in Uboot. But I cann't find a handbook to describe it. https://community.nxp.com/t5/PowerQUICC-Processors/I-need-write-MPC8306-interrupt-function-by-c-language-in-Uboot/m-p/262148#M450 <HTML><HEAD></HEAD><BODY><P>My processor is Mpc8306. And my code must run in Uboot., not in linux. But I can not find any handbook to describe wirte interrupt function. I download gcc manual. The manual does not say about gramma about ppc interrupt. For example, gcc book describe the ARM interrupt:&nbsp; "void f () __attribute__ ((interrupt ("IRQ")));" , it is a interrupt handle function to tell gcc compile.&nbsp; Also, I don't know how to write assemble like start.s in uboot,&nbsp; The start's file has something like "GOT_ENTRY(_FIXUP_TABLE_)",&nbsp; I don't know what it mean.</P><P>Please help me?</P><P>.</P></BODY></HTML> Sat, 14 Dec 2013 09:15:40 GMT https://community.nxp.com/t5/PowerQUICC-Processors/I-need-write-MPC8306-interrupt-function-by-c-language-in-Uboot/m-p/262148#M450 leimao 2013-12-14T09:15:40Z Re: I need write MPC8306 interrupt function by c language in Uboot. But I cann't find a handbook to describe it. https://community.nxp.com/t5/PowerQUICC-Processors/I-need-write-MPC8306-interrupt-function-by-c-language-in-Uboot/m-p/262149#M451 <HTML><HEAD></HEAD><BODY><P>Please refer to the section "Vector Table" in cpu/mpc83xx/start.S and the file cpu/mpc83xx/interrupts.c and cpu/mpc83xx/traps.c.</P></BODY></HTML> Thu, 02 Jan 2014 05:56:42 GMT https://community.nxp.com/t5/PowerQUICC-Processors/I-need-write-MPC8306-interrupt-function-by-c-language-in-Uboot/m-p/262149#M451 yipingwang 2014-01-02T05:56:42Z Re: I need write MPC8306 interrupt function by c language in Uboot. But I cann't find a handbook to describe it. https://community.nxp.com/t5/PowerQUICC-Processors/I-need-write-MPC8306-interrupt-function-by-c-language-in-Uboot/m-p/262150#M452 <HTML><HEAD></HEAD><BODY><P>In u-boot, code or variable addresses cannot be decided when compiling, GOT is used to solve this problem.</P><P>STARG_GOT is used to define the start of the table, END_GOT is used to define the end of the table, </P><P>GOT_ENTRY is used to write the offset into the table and "GOT" is used for reading the offset from the table.</P><P>Please refer to cpu/mpc83xx/u-boot.lds for _FIXUP_TABLE_ defination.</P></BODY></HTML> Thu, 02 Jan 2014 06:05:19 GMT https://community.nxp.com/t5/PowerQUICC-Processors/I-need-write-MPC8306-interrupt-function-by-c-language-in-Uboot/m-p/262150#M452 yipingwang 2014-01-02T06:05:19Z