From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3BE7E505.DC9DE6E8@laposte.net> Date: Tue, 06 Nov 2001 14:26:29 +0100 From: ibm405gp MIME-Version: 1.0 To: list Subject: Abatron Bdi2000 and 405GP Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hello, How can i read back (or write) for example, the FPGA registers from the walnut board (at @OxFO300000) with abatron. I can read this memory area just after the ioremap operation (in walnut.c) when the entry for 0XF0300000 is present in the TLB without any problem (0xF0300000 -> 0xF0300000). With the abatron debugger, i should be able to read any virtual adress, even if this adress is not present in the TLB. Am i right ? Any suggestion ? Thanks. I'am using the latest version of bdiGdb (1.07), with the folllowing config file : [INIT] ; Setup MMU info WM32 0x000000f4 0x00000000 ;invalidate kernel page table base WM32 0x000000f8 0x00000000 ;invalidate process page table base WM32 0x000000f0 0xc00000f4 ;invalidate page table base [TARGET] MMU XLAT 0xC0000000 ;enable virtual address mode PTBASE 0x000000f0 ;address where kernel/user stores pointer to page table the hhl 2.0 from monta vista with the following head_4xx.S /* Add helper information for the Abatron bdiGDB debugger. */ lis r5, abatron_pteptrs@ha ori r5, r5, abatron_pteptrs@l stw r5, 0xf0(r0) /* This much match your Abatron config */ lis r6, swapper_pg_dir@h ori r6, r6, swapper_pg_dir@l tophys(r5, r5) stw r6, 0(r5) ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/