leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
1e22cbbeaf
u-boot/board/a4m072/a4m072.c
Simon Glass f1683aa73c board_f: Rename initdram() to dram_init() 
This allows us to use the same DRAM init function on all archs. Add a
dummy function for arc, which does not use DRAM init here.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Dummy function on nios2]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-04-13 09:40:57 -04:00

480 lines
11 KiB
C
Raw Blame History

/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2004
* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
*
* (C) Copyright 2010
* Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <mpc5xxx.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <libfdt.h>
#include <netdev.h>
#include <led-display.h>
#include <linux/err.h>
#include "mt46v32m16.h"
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start (int hi_addr)
{
long hi_addr_bit = hi_addr ? 0x01000000 : 0;
long control = SDRAM_CONTROL | hi_addr_bit;
/* unlock mode register */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000);
__asm__ volatile ("sync");
/* precharge all banks */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
__asm__ volatile ("sync");
#if SDRAM_DDR
/* set mode register: extended mode */
out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_EMODE);
__asm__ volatile ("sync");
/* set mode register: reset DLL */
out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE | 0x04000000);
__asm__ volatile ("sync");
#endif
/* precharge all banks */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
__asm__ volatile ("sync");
/* auto refresh */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);
__asm__ volatile ("sync");
/* set mode register */
out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);
__asm__ volatile ("sync");
/* normal operation */
out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
__asm__ volatile ("sync");
}
#endif
/*
* ATTENTION: Although partially referenced dram_init does NOT make real use
* use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
* is something else than 0x00000000.
*/
int dram_init(void)
{
ulong dramsize = 0;
uint svr, pvr;
#ifndef CONFIG_SYS_RAMBOOT
ulong test1, test2;
/* setup SDRAM chip selects */
out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001e); /* 2GB at 0x0 */
out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */
__asm__ volatile ("sync");
/* setup config registers */
out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
__asm__ volatile ("sync");
#if SDRAM_DDR
/* set tap delay */
out_be32((void *)MPC5XXX_CDM_PORCFG, SDRAM_TAPDELAY);
__asm__ volatile ("sync");
#endif
/* find RAM size using SDRAM CS0 only */
sdram_start(0);
test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
sdram_start(1);
test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
if (test1 > test2) {
sdram_start(0);
dramsize = test1;
} else {
dramsize = test2;
}
/* memory smaller than 1MB is impossible */
if (dramsize < (1 << 20)) {
dramsize = 0;
}
/* set SDRAM CS0 size according to the amount of RAM found */
if (dramsize > 0) {
out_be32((void *)MPC5XXX_SDRAM_CS0CFG,
0x13 + __builtin_ffs(dramsize >> 20) - 1);
} else {
out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
}
#else /* CONFIG_SYS_RAMBOOT */
/* retrieve size of memory connected to SDRAM CS0 */
dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
if (dramsize >= 0x13) {
dramsize = (1 << (dramsize - 0x13)) << 20;
} else {
dramsize = 0;
}
#endif /* CONFIG_SYS_RAMBOOT */
/*
* On MPC5200B we need to set the special configuration delay in the
* DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
* Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
*
* "The SDelay should be written to a value of 0x00000004. It is
* required to account for changes caused by normal wafer processing
* parameters."
*/
svr = get_svr();
pvr = get_pvr();
if ((SVR_MJREV(svr) >= 2) &&
(PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04);
__asm__ volatile ("sync");
}
gd->ram_size = dramsize;
return 0;
}
int checkboard (void)
{
puts ("Board: A4M072\n");
return 0;
}
#ifdef CONFIG_PCI
static struct pci_controller hose;
extern void pci_mpc5xxx_init(struct pci_controller *);
void pci_init_board(void)
{
pci_mpc5xxx_init(&hose);
}
#endif
#ifdef CONFIG_OF_BOARD_SETUP
int ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
return 0;
}
#endif /* CONFIG_OF_BOARD_SETUP */
int board_eth_init(bd_t *bis)
{
int rv, num_if = 0;
/* Initialize TSECs first */
if ((rv = cpu_eth_init(bis)) >= 0)
num_if += rv;
else
printf("ERROR: failed to initialize FEC.\n");
if ((rv = pci_eth_init(bis)) >= 0)
num_if += rv;
else
printf("ERROR: failed to initialize PCI Ethernet.\n");
return num_if;
}
/*
* Miscellaneous late-boot configurations
*
* Initialize EEPROM write-protect GPIO pin.
*/
int misc_init_r(void)
{
#if defined(CONFIG_SYS_EEPROM_WREN)
/* Enable GPIO pin */
setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, CONFIG_SYS_EEPROM_WP);
/* Set direction, output */
setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, CONFIG_SYS_EEPROM_WP);
/* De-assert write enable */
setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
#endif
return 0;
}
#if defined(CONFIG_SYS_EEPROM_WREN)
/* Input: <dev_addr> I2C address of EEPROM device to enable.
* <state> -1: deliver current state
* 0: disable write
* 1: enable write
* Returns: -1: wrong device address
* 0: dis-/en- able done
* 0/1: current state if <state> was -1.
*/
int eeprom_write_enable (unsigned dev_addr, int state)
{
if (CONFIG_SYS_I2C_EEPROM_ADDR != dev_addr) {
return -1;
} else {
switch (state) {
case 1:
/* Enable write access */
clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
state = 0;
break;
case 0:
/* Disable write access */
setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
state = 0;
break;
default:
/* Read current status back. */
state = (0 == (in_be32((void *)MPC5XXX_WU_GPIO_DATA_O) &
CONFIG_SYS_EEPROM_WP));
break;
}
}
return state;
}
#endif
#ifdef CONFIG_CMD_DISPLAY
#define DISPLAY_BUF_SIZE 2
static u8 display_buf[DISPLAY_BUF_SIZE];
static u8 display_putc_pos;
static u8 display_out_pos;
void display_set(int cmd) {
if (cmd & DISPLAY_CLEAR) {
display_buf[0] = display_buf[1] = 0;
}
if (cmd & DISPLAY_HOME) {
display_putc_pos = 0;
}
}
#define SEG_A (1<<0)
#define SEG_B (1<<1)
#define SEG_C (1<<2)
#define SEG_D (1<<3)
#define SEG_E (1<<4)
#define SEG_F (1<<5)
#define SEG_G (1<<6)
#define SEG_P (1<<7)
#define SEG__ 0
/*
* +- A -+
* | |
* F B
* | |
* +- G -+
* | |
* E C
* | |
* +- D -+ P
*
* 0..9 index 0..9
* A..Z index 10..35
* - index 36
* _ index 37
* . index 38
*/
#define SYMBOL_DASH (36)
#define SYMBOL_UNDERLINE (37)
#define SYMBOL_DOT (38)
static u8 display_char2seg7_tbl[]=
{
SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* 0 */
SEG_B | SEG_C, /* 1 */
SEG_A | SEG_B | SEG_D | SEG_E | SEG_G, /* 2 */
SEG_A | SEG_B | SEG_C | SEG_D | SEG_G, /* 3 */
SEG_B | SEG_C | SEG_F | SEG_G, /* 4 */
SEG_A | SEG_C | SEG_D | SEG_F | SEG_G, /* 5 */
SEG_A | SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* 6 */
SEG_A | SEG_B | SEG_C, /* 7 */
SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* 8 */
SEG_A | SEG_B | SEG_C | SEG_D | SEG_F | SEG_G, /* 9 */
SEG_A | SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, /* A */
SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* b */
SEG_A | SEG_D | SEG_E | SEG_F, /* C */
SEG_B | SEG_C | SEG_D | SEG_E | SEG_G, /* d */
SEG_A | SEG_D | SEG_E | SEG_F | SEG_G, /* E */
SEG_A | SEG_E | SEG_F | SEG_G, /* F */
0, /* g - not displayed */
SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, /* H */
SEG_B | SEG_C, /* I */
0, /* J - not displayed */
0, /* K - not displayed */
SEG_D | SEG_E | SEG_F, /* L */
0, /* m - not displayed */
0, /* n - not displayed */
SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* O */
SEG_A | SEG_B | SEG_E | SEG_F | SEG_G, /* P */
0, /* q - not displayed */
0, /* r - not displayed */
SEG_A | SEG_C | SEG_D | SEG_F | SEG_G, /* S */
SEG_D | SEG_E | SEG_F | SEG_G, /* t */
SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* U */
0, /* V - not displayed */
0, /* w - not displayed */
0, /* X - not displayed */
SEG_B | SEG_C | SEG_D | SEG_F | SEG_G, /* Y */
0, /* Z - not displayed */
SEG_G, /* - */
SEG_D, /* _ */
SEG_P /* . */
};
/* Convert char to the LED segments representation */
static u8 display_char2seg7(char c)
{
u8 val = 0;
if (c >= '0' && c <= '9')
c -= '0';
else if (c >= 'a' && c <= 'z')
c -= 'a' - 10;
else if (c >= 'A' && c <= 'Z')
c -= 'A' - 10;
else if (c == '-')
c = SYMBOL_DASH;
else if (c == '_')
c = SYMBOL_UNDERLINE;
else if (c == '.')
c = SYMBOL_DOT;
else
c = ' '; /* display unsupported symbols as space */
if (c != ' ')
val = display_char2seg7_tbl[(int)c];
return val;
}
int display_putc(char c)
{
if (display_putc_pos >= DISPLAY_BUF_SIZE)
return -1;
display_buf[display_putc_pos++] = display_char2seg7(c);
/* one-symbol message should be steady */
if (display_putc_pos == 1)
display_buf[display_putc_pos] = display_char2seg7(c);
return c;
}
/*
* Flush current symbol to the LED display hardware
*/
static inline void display_flush(void)
{
u32 val = display_buf[display_out_pos];
val |= (val << 8) | (val << 16) | (val << 24);
out_be32((void *)CONFIG_SYS_DISP_CHR_RAM, val);
}
/*
* Output contents of the software display buffer to the LED display every 0.5s
*/
void board_show_activity(ulong timestamp)
{
static ulong last;
static u8 once;
if (!once || (timestamp - last >= (CONFIG_SYS_HZ / 2))) {
display_flush();
display_out_pos ^= 1;
last = timestamp;
once = 1;
}
}
/*
* Empty fake function
*/
void show_activity(int arg)
{
}
#endif
#if defined (CONFIG_SHOW_BOOT_PROGRESS)
static int a4m072_status2code(int status, char *buf)
{
char c = 0;
if (((status > 0) && (status <= 8)) ||
((status >= 100) && (status <= 108)) ||
((status < 0) && (status >= -9)) ||
(status == -100) || (status == -101) ||
((status <= -103) && (status >= -113))) {
c = '5';
} else if (((status >= 9) && (status <= 14)) ||
((status >= 120) && (status <= 123)) ||
((status >= 125) && (status <= 129)) ||
((status >= -13) && (status <= -10)) ||
(status == -120) || (status == -122) ||
((status <= -124) && (status >= -127)) ||
(status == -129)) {
c = '8';
} else if (status == 15) {
c = '9';
} else if ((status <= -30) && (status >= -32)) {
c = 'A';
} else if (((status <= -35) && (status >= -40)) ||
((status <= -42) && (status >= -51)) ||
((status <= -53) && (status >= -58)) ||
(status == -64) ||
((status <= -80) && (status >= -83)) ||
(status == -130) || (status == -140) ||
(status == -150)) {
c = 'B';
}
if (c == 0)
return -EINVAL;
buf[0] = (status < 0) ? '-' : c;
buf[1] = c;
return 0;
}
void show_boot_progress(int status)
{
char buf[2];
if (a4m072_status2code(status, buf) < 0)
return;
display_putc(buf[0]);
display_putc(buf[1]);
display_set(DISPLAY_HOME);
display_out_pos = 0; /* reset output position */
/* we want to flush status 15 now */
if (status == BOOTSTAGE_ID_RUN_OS)
display_flush();
}
#endif
Reference in New Issue View Git Blame Copy Permalink