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https://github.com/brain-hackers/u-boot-brain
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![Mike Frysinger](/assets/img/avatar_default.png)
The environment is the canonical storage location of the mac address, so we're killing off the global data location and moving everything to querying the env directly. Rather than have the common ppc code have board-specific hooks, move the board_get_enetaddr() function into the board-specific init functions. Signed-off-by: Mike Frysinger <vapier@gentoo.org> CC: Ben Warren <biggerbadderben@gmail.com>
276 lines
6.7 KiB
C
276 lines
6.7 KiB
C
/*
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* (C) Copyright 2001
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* Stäubli Faverges - <www.staubli.com>
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* Pierre AUBERT p.aubert@staubli.com
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* U-Boot port on RPXClassic LF (CLLF_BW31) board
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*
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* (C) Copyright 2000
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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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#include <common.h>
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#include <i2c.h>
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#include <config.h>
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#include <mpc8xx.h>
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/* ------------------------------------------------------------------------- */
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static long int dram_size (long int, long int *, long int);
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static unsigned char aschex_to_byte (unsigned char *cp);
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/* ------------------------------------------------------------------------- */
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#define _NOT_USED_ 0xFFFFCC25
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const uint sdram_table[] =
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{
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/*
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* Single Read. (Offset 00h in UPMA RAM)
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*/
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0xCFFFCC24, 0x0FFFCC04, 0X0CAFCC04, 0X03AFCC08,
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0x3FBFCC27, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Burst Read. (Offset 08h in UPMA RAM)
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*/
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0xCFFFCC24, 0x0FFFCC04, 0x0CAFCC84, 0x03AFCC88,
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0x3FBFCC27, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Single Write. (Offset 18h in UPMA RAM)
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*/
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0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC04, 0x03FFCC00,
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0x3FFFCC27, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Burst Write. (Offset 20h in UPMA RAM)
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*/
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0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC80, 0x03FFCC8C,
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0x0CFFCC00, 0x33FFCC27, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_,
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/*
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* Refresh. (Offset 30h in UPMA RAM)
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*/
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0xC0FFCC24, 0x03FFCC24, 0x0FFFCC24, 0x0FFFCC24,
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0x3FFFCC27, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Exception. (Offset 3Ch in UPMA RAM)
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*/
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_
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};
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/* ------------------------------------------------------------------------- */
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/*
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* Check Board Identity:
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*/
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int checkboard (void)
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{
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puts ("Board: RPXClassic\n");
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return (0);
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}
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/*-----------------------------------------------------------------------------
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* board_get_enetaddr -- Read the MAC Address in the I2C EEPROM
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*-----------------------------------------------------------------------------
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*/
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static void board_get_enetaddr(uchar *enet)
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{
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int i;
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char buff[256], *cp;
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/* Initialize I2C */
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i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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/* Read 256 bytes in EEPROM */
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i2c_read (0x54, 0, 1, (uchar *)buff, 128);
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i2c_read (0x54, 128, 1, (uchar *)buff + 128, 128);
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/* Retrieve MAC address in buffer (key EA) */
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for (cp = buff;;) {
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if (cp[0] == 'E' && cp[1] == 'A') {
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cp += 3;
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/* Read MAC address */
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for (i = 0; i < 6; i++, cp += 2) {
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enet[i] = aschex_to_byte ((unsigned char *)cp);
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}
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}
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/* Scan to the end of the record */
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while ((*cp != '\n') && (*cp != (char)0xff)) {
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cp++;
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}
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/* If the next character is a \n, 0 or ff, we are done. */
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cp++;
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if ((*cp == '\n') || (*cp == 0) || (*cp == (char)0xff))
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break;
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}
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#ifdef CONFIG_FEC_ENET
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/* The MAC address is the same as normal ethernet except the 3rd byte */
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/* (See the E.P. Planet Core Overview manual */
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enet[3] |= 0x80;
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#endif
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printf("MAC address = %pM\n", enet);
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}
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int misc_init_r(void)
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{
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uchar enetaddr[6];
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if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
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board_get_enetaddr(enetaddr);
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eth_putenv_enetaddr("ethaddr", enetaddr);
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}
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return 0;
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}
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void rpxclassic_init (void)
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{
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/* Enable NVRAM */
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*((uchar *) BCSR0) |= BCSR0_ENNVRAM;
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#ifdef CONFIG_FEC_ENET
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/* Validate the fast ethernet tranceiver */
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*((volatile uchar *) BCSR2) &= ~BCSR2_MIICTL;
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*((volatile uchar *) BCSR2) &= ~BCSR2_MIIPWRDWN;
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*((volatile uchar *) BCSR2) |= BCSR2_MIIRST;
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*((volatile uchar *) BCSR2) |= BCSR2_MIIPWRDWN;
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#endif
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}
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/* ------------------------------------------------------------------------- */
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phys_size_t initdram (int board_type)
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{
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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volatile memctl8xx_t *memctl = &immap->im_memctl;
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long int size10;
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upmconfig (UPMA, (uint *) sdram_table,
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sizeof (sdram_table) / sizeof (uint));
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/* Refresh clock prescalar */
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memctl->memc_mptpr = CONFIG_SYS_MPTPR;
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memctl->memc_mar = 0x00000000;
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/* Map controller banks 1 to the SDRAM bank */
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memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
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memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;
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memctl->memc_mamr = CONFIG_SYS_MAMR_10COL & (~(MAMR_PTAE)); /* no refresh yet */
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udelay (200);
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/* perform SDRAM initializsation sequence */
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memctl->memc_mcr = 0x80002230; /* SDRAM bank 0 - refresh twice */
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udelay (1);
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memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
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udelay (1000);
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/* Check Bank 0 Memory Size
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* try 10 column mode
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*/
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size10 = dram_size (CONFIG_SYS_MAMR_10COL, SDRAM_BASE_PRELIM,
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SDRAM_MAX_SIZE);
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return (size10);
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}
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/* ------------------------------------------------------------------------- */
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/*
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* Check memory range for valid RAM. A simple memory test determines
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* the actually available RAM size between addresses `base' and
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* `base + maxsize'. Some (not all) hardware errors are detected:
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* - short between address lines
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* - short between data lines
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*/
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static long int dram_size (long int mamr_value, long int *base, long int maxsize)
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{
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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volatile memctl8xx_t *memctl = &immap->im_memctl;
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memctl->memc_mamr = mamr_value;
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return (get_ram_size(base, maxsize));
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}
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/*-----------------------------------------------------------------------------
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* aschex_to_byte --
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*-----------------------------------------------------------------------------
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*/
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static unsigned char aschex_to_byte (unsigned char *cp)
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{
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u_char byte, c;
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c = *cp++;
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if ((c >= 'A') && (c <= 'F')) {
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c -= 'A';
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c += 10;
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} else if ((c >= 'a') && (c <= 'f')) {
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c -= 'a';
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c += 10;
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} else {
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c -= '0';
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}
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byte = c * 16;
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c = *cp;
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if ((c >= 'A') && (c <= 'F')) {
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c -= 'A';
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c += 10;
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} else if ((c >= 'a') && (c <= 'f')) {
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c -= 'a';
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c += 10;
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} else {
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c -= '0';
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}
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byte += c;
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return (byte);
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}
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