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u-boot-brain/board/freescale/mpc8360emds/mpc8360emds.c
Anton Vorontsov 5c2ff323a9 mpc83xx: mpc8360emds: rework LBC SDRAM setup 
Currently 64M of LBC SDRAM are mapped at 0xF0000000 which makes
it difficult to use (b/c then the memory is discontinuous and
there is quite big memory hole between the DDR/SDRAM regions).

This patch reworks LBC SDRAM setup so that now we dynamically
place the LBC SDRAM near the DDR (or at 0x0 if there isn't any
DDR memory).

With this patch we're able to:

- Boot without external DDR memory;
- Use most "DDR + SDRAM" setups without need to support for
  sparse/discontinuous memory model in the software.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2008-10-21 18:31:07 -05:00

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/*
* Copyright (C) 2006 Freescale Semiconductor, Inc.
* Dave Liu <daveliu@freescale.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include <common.h>
#include <ioports.h>
#include <mpc83xx.h>
#include <i2c.h>
#include <miiphy.h>
#if defined(CONFIG_PCI)
#include <pci.h>
#endif
#include <spd_sdram.h>
#include <asm/mmu.h>
#if defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#endif
#if defined(CONFIG_PQ_MDS_PIB)
#include "../common/pq-mds-pib.h"
#endif
const qe_iop_conf_t qe_iop_conf_tab[] = {
/* GETH1 */
{0, 3, 1, 0, 1}, /* TxD0 */
{0, 4, 1, 0, 1}, /* TxD1 */
{0, 5, 1, 0, 1}, /* TxD2 */
{0, 6, 1, 0, 1}, /* TxD3 */
{1, 6, 1, 0, 3}, /* TxD4 */
{1, 7, 1, 0, 1}, /* TxD5 */
{1, 9, 1, 0, 2}, /* TxD6 */
{1, 10, 1, 0, 2}, /* TxD7 */
{0, 9, 2, 0, 1}, /* RxD0 */
{0, 10, 2, 0, 1}, /* RxD1 */
{0, 11, 2, 0, 1}, /* RxD2 */
{0, 12, 2, 0, 1}, /* RxD3 */
{0, 13, 2, 0, 1}, /* RxD4 */
{1, 1, 2, 0, 2}, /* RxD5 */
{1, 0, 2, 0, 2}, /* RxD6 */
{1, 4, 2, 0, 2}, /* RxD7 */
{0, 7, 1, 0, 1}, /* TX_EN */
{0, 8, 1, 0, 1}, /* TX_ER */
{0, 15, 2, 0, 1}, /* RX_DV */
{0, 16, 2, 0, 1}, /* RX_ER */
{0, 0, 2, 0, 1}, /* RX_CLK */
{2, 9, 1, 0, 3}, /* GTX_CLK - CLK10 */
{2, 8, 2, 0, 1}, /* GTX125 - CLK9 */
/* GETH2 */
{0, 17, 1, 0, 1}, /* TxD0 */
{0, 18, 1, 0, 1}, /* TxD1 */
{0, 19, 1, 0, 1}, /* TxD2 */
{0, 20, 1, 0, 1}, /* TxD3 */
{1, 2, 1, 0, 1}, /* TxD4 */
{1, 3, 1, 0, 2}, /* TxD5 */
{1, 5, 1, 0, 3}, /* TxD6 */
{1, 8, 1, 0, 3}, /* TxD7 */
{0, 23, 2, 0, 1}, /* RxD0 */
{0, 24, 2, 0, 1}, /* RxD1 */
{0, 25, 2, 0, 1}, /* RxD2 */
{0, 26, 2, 0, 1}, /* RxD3 */
{0, 27, 2, 0, 1}, /* RxD4 */
{1, 12, 2, 0, 2}, /* RxD5 */
{1, 13, 2, 0, 3}, /* RxD6 */
{1, 11, 2, 0, 2}, /* RxD7 */
{0, 21, 1, 0, 1}, /* TX_EN */
{0, 22, 1, 0, 1}, /* TX_ER */
{0, 29, 2, 0, 1}, /* RX_DV */
{0, 30, 2, 0, 1}, /* RX_ER */
{0, 31, 2, 0, 1}, /* RX_CLK */
{2, 2, 1, 0, 2}, /* GTX_CLK = CLK10 */
{2, 3, 2, 0, 1}, /* GTX125 - CLK4 */
{0, 1, 3, 0, 2}, /* MDIO */
{0, 2, 1, 0, 1}, /* MDC */
{5, 0, 1, 0, 2}, /* UART2_SOUT */
{5, 1, 2, 0, 3}, /* UART2_CTS */
{5, 2, 1, 0, 1}, /* UART2_RTS */
{5, 3, 2, 0, 2}, /* UART2_SIN */
{0, 0, 0, 0, QE_IOP_TAB_END}, /* END of table */
};
int board_early_init_f(void)
{
u8 *bcsr = (u8 *)CONFIG_SYS_BCSR;
const immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
/* Enable flash write */
bcsr[0xa] &= ~0x04;
/* Disable G1TXCLK, G2TXCLK h/w buffers (rev.2.x h/w bug workaround) */
if (REVID_MAJOR(immr->sysconf.spridr) == 2)
bcsr[0xe] = 0x30;
/* Enable second UART */
bcsr[0x9] &= ~0x01;
return 0;
}
int board_early_init_r(void)
{
#ifdef CONFIG_PQ_MDS_PIB
pib_init();
#endif
return 0;
}
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
extern void ddr_enable_ecc(unsigned int dram_size);
#endif
int fixed_sdram(void);
static int sdram_init(unsigned int base);
phys_size_t initdram(int board_type)
{
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
u32 msize = 0;
if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
return -1;
/* DDR SDRAM - Main SODIMM */
im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_BASE & LAWBAR_BAR;
#if defined(CONFIG_SPD_EEPROM)
msize = spd_sdram();
#else
msize = fixed_sdram();
#endif
#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
/*
* Initialize DDR ECC byte
*/
ddr_enable_ecc(msize * 1024 * 1024);
#endif
/*
* Initialize SDRAM if it is on local bus.
*/
msize += sdram_init(msize * 1024 * 1024);
/* return total bus SDRAM size(bytes) -- DDR */
return (msize * 1024 * 1024);
}
#if !defined(CONFIG_SPD_EEPROM)
/*************************************************************************
* fixed sdram init -- doesn't use serial presence detect.
************************************************************************/
int fixed_sdram(void)
{
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
u32 msize = 0;
u32 ddr_size;
u32 ddr_size_log2;
msize = CONFIG_SYS_DDR_SIZE;
for (ddr_size = msize << 20, ddr_size_log2 = 0;
(ddr_size > 1); ddr_size = ddr_size >> 1, ddr_size_log2++) {
if (ddr_size & 1) {
return -1;
}
}
im->sysconf.ddrlaw[0].ar =
LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
#if (CONFIG_SYS_DDR_SIZE != 256)
#warning Currenly any ddr size other than 256 is not supported
#endif
#ifdef CONFIG_DDR_II
im->ddr.csbnds[0].csbnds = CONFIG_SYS_DDR_CS0_BNDS;
im->ddr.cs_config[0] = CONFIG_SYS_DDR_CS0_CONFIG;
im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
im->ddr.sdram_cfg = CONFIG_SYS_DDR_SDRAM_CFG;
im->ddr.sdram_cfg2 = CONFIG_SYS_DDR_SDRAM_CFG2;
im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE2;
im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CNTL;
#else
im->ddr.csbnds[0].csbnds = 0x00000007;
im->ddr.csbnds[1].csbnds = 0x0008000f;
im->ddr.cs_config[0] = CONFIG_SYS_DDR_CONFIG;
im->ddr.cs_config[1] = CONFIG_SYS_DDR_CONFIG;
im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
im->ddr.sdram_cfg = CONFIG_SYS_DDR_CONTROL;
im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
#endif
udelay(200);
im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
return msize;
}
#endif /*!CONFIG_SYS_SPD_EEPROM */
int checkboard(void)
{
puts("Board: Freescale MPC8360EMDS\n");
return 0;
}
/*
* if MPC8360EMDS is soldered with SDRAM
*/
#ifdef CONFIG_SYS_LB_SDRAM
/*
* Initialize SDRAM memory on the Local Bus.
*/
static int sdram_init(unsigned int base)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile lbus83xx_t *lbc = &immap->lbus;
const int sdram_size = CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024;
int rem = base % sdram_size;
uint *sdram_addr;
/* window base address should be aligned to the window size */
if (rem)
base = base - rem + sdram_size;
sdram_addr = (uint *)base;
/*
* Setup SDRAM Base and Option Registers
*/
immap->lbus.bank[2].br = base | CONFIG_SYS_BR2;
immap->lbus.bank[2].or = CONFIG_SYS_OR2;
immap->sysconf.lblaw[2].bar = base;
immap->sysconf.lblaw[2].ar = CONFIG_SYS_LBLAWAR2;
/*setup mtrpt, lsrt and lbcr for LB bus */
lbc->lbcr = CONFIG_SYS_LBC_LBCR;
lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
lbc->lsrt = CONFIG_SYS_LBC_LSRT;
asm("sync");
/*
* Configure the SDRAM controller Machine Mode Register.
*/
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_5; /* Normal Operation */
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_1; /* Precharge All Banks */
asm("sync");
*sdram_addr = 0xff;
udelay(100);
/*
* We need do 8 times auto refresh operation.
*/
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_2;
asm("sync");
*sdram_addr = 0xff; /* 1 times */
udelay(100);
*sdram_addr = 0xff; /* 2 times */
udelay(100);
*sdram_addr = 0xff; /* 3 times */
udelay(100);
*sdram_addr = 0xff; /* 4 times */
udelay(100);
*sdram_addr = 0xff; /* 5 times */
udelay(100);
*sdram_addr = 0xff; /* 6 times */
udelay(100);
*sdram_addr = 0xff; /* 7 times */
udelay(100);
*sdram_addr = 0xff; /* 8 times */
udelay(100);
/* Mode register write operation */
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_4;
asm("sync");
*(sdram_addr + 0xcc) = 0xff;
udelay(100);
/* Normal operation */
lbc->lsdmr = CONFIG_SYS_LBC_LSDMR_5 | 0x40000000;
asm("sync");
*sdram_addr = 0xff;
udelay(100);
/*
* In non-aligned case we don't [normally] use that memory because
* there is a hole.
*/
if (rem)
return 0;
return CONFIG_SYS_LBC_SDRAM_SIZE;
}
#else
static int sdram_init(unsigned int base) { return 0; }
#endif
#if defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup(void *blob, bd_t *bd)
{
const immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
ft_cpu_setup(blob, bd);
#ifdef CONFIG_PCI
ft_pci_setup(blob, bd);
#endif
/*
* mpc8360ea pb mds errata 2: RGMII timing
* if on mpc8360ea rev. 2.1,
* change both ucc phy-connection-types from rgmii-id to rgmii-rxid
*/
if ((REVID_MAJOR(immr->sysconf.spridr) == 2) &&
(REVID_MINOR(immr->sysconf.spridr) == 1)) {
int nodeoffset;
const char *prop;
int path;
nodeoffset = fdt_path_offset(blob, "/aliases");
if (nodeoffset >= 0) {
#if defined(CONFIG_HAS_ETH0)
/* fixup UCC 1 if using rgmii-id mode */
prop = fdt_getprop(blob, nodeoffset, "ethernet0", NULL);
if (prop) {
path = fdt_path_offset(blob, prop);
prop = fdt_getprop(blob, path,
"phy-connection-type", 0);
if (prop && (strcmp(prop, "rgmii-id") == 0))
fdt_setprop(blob, path,
"phy-connection-type",
"rgmii-rxid",
sizeof("rgmii-rxid"));
}
#endif
#if defined(CONFIG_HAS_ETH1)
/* fixup UCC 2 if using rgmii-id mode */
prop = fdt_getprop(blob, nodeoffset, "ethernet1", NULL);
if (prop) {
path = fdt_path_offset(blob, prop);
prop = fdt_getprop(blob, path,
"phy-connection-type", 0);
if (prop && (strcmp(prop, "rgmii-id") == 0))
fdt_setprop(blob, path,
"phy-connection-type",
"rgmii-rxid",
sizeof("rgmii-rxid"));
}
#endif
}
}
}
#endif
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