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https://github.com/AsahiLinux/u-boot
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ba705b5b1a
This change is needed for mgcoge because it uses two ethernet drivers. Add a check for the presence of the PIGGY board on mgcoge. Without this board networking cannot work and the initialization must be aborted. Only allocate rtx once to prevent DPRAM exhaustion. Initialize ether_scc.c and the keymile-specific HDLC driver (to be added soon) in eth.c. Signed-off-by: Gary Jennejohn <garyj@denx.de> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
333 lines
7.9 KiB
C
333 lines
7.9 KiB
C
/*
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* (C) Copyright 2000-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* CPU specific code for the MPC825x / MPC826x / MPC827x / MPC828x
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*
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* written or collected and sometimes rewritten by
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* Magnus Damm <damm@bitsmart.com>
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*
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* modified by
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* Wolfgang Denk <wd@denx.de>
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*
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* modified for 8260 by
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* Murray Jensen <Murray.Jensen@cmst.csiro.au>
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*
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* added 8260 masks by
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* Marius Groeger <mag@sysgo.de>
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*
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* added HiP7 (824x/827x/8280) processors support by
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* Yuli Barcohen <yuli@arabellasw.com>
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*/
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#include <common.h>
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#include <watchdog.h>
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#include <command.h>
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#include <mpc8260.h>
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#include <netdev.h>
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#include <asm/processor.h>
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#include <asm/cpm_8260.h>
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#if defined(CONFIG_OF_LIBFDT)
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#include <libfdt.h>
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#include <libfdt_env.h>
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#include <fdt_support.h>
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_GET_CPU_STR_F)
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extern int get_cpu_str_f (char *buf);
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#endif
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int checkcpu (void)
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{
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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ulong clock = gd->cpu_clk;
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uint pvr = get_pvr ();
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uint immr, rev, m, k;
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char buf[32];
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puts ("CPU: ");
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switch (pvr) {
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case PVR_8260:
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case PVR_8260_HIP3:
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k = 3;
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break;
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case PVR_8260_HIP4:
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k = 4;
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break;
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case PVR_8260_HIP7R1:
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case PVR_8260_HIP7RA:
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case PVR_8260_HIP7:
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k = 7;
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break;
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default:
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return -1; /* whoops! not an MPC8260 */
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}
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rev = pvr & 0xff;
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immr = immap->im_memctl.memc_immr;
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if ((immr & IMMR_ISB_MSK) != CONFIG_SYS_IMMR)
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return -1; /* whoops! someone moved the IMMR */
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#if defined(CONFIG_GET_CPU_STR_F)
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get_cpu_str_f (buf);
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printf ("%s (HiP%d Rev %02x, Mask ", buf, k, rev);
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#else
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printf (CPU_ID_STR " (HiP%d Rev %02x, Mask ", k, rev);
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#endif
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/*
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* the bottom 16 bits of the immr are the Part Number and Mask Number
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* (4-34); the 16 bits at PROFF_REVNUM (0x8af0) in dual port ram is the
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* RISC Microcode Revision Number (13-10).
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* For the 8260, Motorola doesn't include the Microcode Revision
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* in the mask.
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*/
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m = immr & (IMMR_PARTNUM_MSK | IMMR_MASKNUM_MSK);
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k = *((ushort *) & immap->im_dprambase[PROFF_REVNUM]);
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switch (m) {
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case 0x0000:
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puts ("0.2 2J24M");
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break;
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case 0x0010:
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puts ("A.0 K22A");
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break;
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case 0x0011:
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puts ("A.1 1K22A-XC");
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break;
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case 0x0001:
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puts ("B.1 1K23A");
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break;
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case 0x0021:
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puts ("B.2 2K23A-XC");
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break;
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case 0x0023:
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puts ("B.3 3K23A");
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break;
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case 0x0024:
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puts ("C.2 6K23A");
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break;
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case 0x0060:
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puts ("A.0(A) 2K25A");
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break;
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case 0x0062:
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puts ("B.1 4K25A");
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break;
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case 0x0064:
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puts ("C.0 5K25A");
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break;
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case 0x0A00:
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puts ("0.0 0K49M");
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break;
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case 0x0A01:
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puts ("0.1 1K49M");
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break;
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case 0x0A10:
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puts ("1.0 1K49M");
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break;
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case 0x0C00:
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puts ("0.0 0K50M");
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break;
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case 0x0C10:
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puts ("1.0 1K50M");
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break;
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case 0x0D00:
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puts ("0.0 0K50M");
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break;
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case 0x0D10:
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puts ("1.0 1K50M");
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break;
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default:
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printf ("unknown [immr=0x%04x,k=0x%04x]", m, k);
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break;
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}
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printf (") at %s MHz\n", strmhz (buf, clock));
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return 0;
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}
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/* ------------------------------------------------------------------------- */
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/* configures a UPM by writing into the UPM RAM array */
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/* uses bank 11 and a dummy physical address (=BRx_BA_MSK) */
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/* NOTE: the physical address chosen must not overlap into any other area */
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/* mapped by the memory controller because bank 11 has the lowest priority */
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void upmconfig (uint upm, uint * table, uint size)
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{
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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volatile memctl8260_t *memctl = &immap->im_memctl;
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volatile uchar *dummy = (uchar *) BRx_BA_MSK; /* set all BA bits */
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uint i;
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/* first set up bank 11 to reference the correct UPM at a dummy address */
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memctl->memc_or11 = ORxU_AM_MSK; /* set all AM bits */
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switch (upm) {
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case UPMA:
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memctl->memc_br11 =
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((uint)dummy & BRx_BA_MSK) | BRx_PS_32 | BRx_MS_UPMA |
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BRx_V;
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memctl->memc_mamr = MxMR_OP_WARR;
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break;
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case UPMB:
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memctl->memc_br11 =
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((uint)dummy & BRx_BA_MSK) | BRx_PS_32 | BRx_MS_UPMB |
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BRx_V;
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memctl->memc_mbmr = MxMR_OP_WARR;
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break;
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case UPMC:
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memctl->memc_br11 =
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((uint)dummy & BRx_BA_MSK) | BRx_PS_32 | BRx_MS_UPMC |
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BRx_V;
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memctl->memc_mcmr = MxMR_OP_WARR;
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break;
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default:
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panic ("upmconfig passed invalid UPM number (%u)\n", upm);
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break;
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}
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/*
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* at this point, the dummy address is set up to access the selected UPM,
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* the MAD pointer is zero, and the MxMR OP is set for writing to RAM
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*
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* now we simply load the mdr with each word and poke the dummy address.
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* the MAD is incremented on each access.
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*/
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for (i = 0; i < size; i++) {
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memctl->memc_mdr = table[i];
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*dummy = 0;
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}
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/* now kill bank 11 */
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memctl->memc_br11 = 0;
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}
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/* ------------------------------------------------------------------------- */
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#if !defined(CONFIG_HAVE_OWN_RESET)
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int
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do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
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{
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ulong msr, addr;
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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immap->im_clkrst.car_rmr = RMR_CSRE; /* Checkstop Reset enable */
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/* Interrupts and MMU off */
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__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
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msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
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__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
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/*
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* Trying to execute the next instruction at a non-existing address
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* should cause a machine check, resulting in reset
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*/
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#ifdef CONFIG_SYS_RESET_ADDRESS
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addr = CONFIG_SYS_RESET_ADDRESS;
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#else
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/*
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* note: when CONFIG_SYS_MONITOR_BASE points to a RAM address, CONFIG_SYS_MONITOR_BASE
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* - sizeof (ulong) is usually a valid address. Better pick an address
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* known to be invalid on your system and assign it to CONFIG_SYS_RESET_ADDRESS.
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*/
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addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong);
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#endif
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((void (*)(void)) addr) ();
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return 1;
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}
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#endif /* CONFIG_HAVE_OWN_RESET */
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/* ------------------------------------------------------------------------- */
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/*
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* Get timebase clock frequency (like cpu_clk in Hz)
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*
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*/
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unsigned long get_tbclk (void)
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{
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ulong tbclk;
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tbclk = (gd->bus_clk + 3L) / 4L;
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return (tbclk);
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}
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/* ------------------------------------------------------------------------- */
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#if defined(CONFIG_WATCHDOG)
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void watchdog_reset (void)
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{
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int re_enable = disable_interrupts ();
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reset_8260_watchdog ((immap_t *) CONFIG_SYS_IMMR);
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if (re_enable)
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enable_interrupts ();
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}
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#endif /* CONFIG_WATCHDOG */
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/* ------------------------------------------------------------------------- */
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#if defined(CONFIG_OF_LIBFDT) && defined (CONFIG_OF_BOARD_SETUP)
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void ft_cpu_setup (void *blob, bd_t *bd)
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{
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char * cpu_path = "/cpus/" OF_CPU;
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#if defined(CONFIG_HAS_ETH0) || defined(CONFIG_HAS_ETH1) ||\
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defined(CONFIG_HAS_ETH2) || defined(CONFIG_HAS_ETH3)
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fdt_fixup_ethernet(blob);
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#endif
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do_fixup_by_path_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
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do_fixup_by_path_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
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do_fixup_by_path_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
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}
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#endif /* CONFIG_OF_LIBFDT */
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/*
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* Initializes on-chip ethernet controllers.
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* to override, implement board_eth_init()
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*/
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int cpu_eth_init(bd_t *bis)
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{
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#if defined(CONFIG_ETHER_ON_FCC)
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fec_initialize(bis);
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#endif
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#if defined(CONFIG_ETHER_ON_SCC)
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mpc82xx_scc_enet_initialize(bd);
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#endif
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return 0;
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}
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