Commit be6b6e4e authored by wdenk's avatar wdenk
Browse files

Patch by Martin Krause, 01 Apr 2005:

Add automatic HW detection for CMC_PU2 and CMC_BASIC
parent e6ba3c92
......@@ -2,8 +2,9 @@
Changes for U-Boot 1.1.3:
======================================================================
* Patch by Martin Krause, 01 Apr 2005:
Fix flash erase timeout on CMC_PU2
* Patches by Martin Krause, 01 Apr 2005:
- Fix flash erase timeout on CMC_PU2
- Add automatic HW detection for CMC_PU2 and CMC_BASIC
* Patch by Steven Scholz, 13 March 2005:
fix cache enabling for AT91RM9200
......
......@@ -6,6 +6,8 @@
* Modified for CMC_PU2 (removed Smart Media support) by Gary Jennejohn
* (2004) garyj@denx.de
*
* Modified for CMC_BASIC by Martin Krause (2005), TQ-Systems GmbH
*
* See file CREDITS for list of people who contributed to this
* project.
*
......@@ -33,22 +35,67 @@
/*
* Miscelaneous platform dependent initialisations
*/
#define CMC_BASIC 1
#define CMC_PU2 2
int hw_detect (void);
int board_init (void)
{
DECLARE_GLOBAL_DATA_PTR;
AT91PS_PIO piob = AT91C_BASE_PIOB;
AT91PS_PIO pioc = AT91C_BASE_PIOC;
/* Enable Ctrlc */
console_init_f ();
/* Correct IRDA resistor problem */
/* Set PA23_TXD in Output */
(AT91PS_PIO) AT91C_BASE_PIOA->PIO_OER = AT91C_PA23_TXD2;
/* (AT91PS_PIO) AT91C_BASE_PIOA->PIO_OER = AT91C_PA23_TXD2; */
/* memory and cpu-speed are setup before relocation */
/* so we do _nothing_ here */
/* arch number of CMC_PU2-Board */
/* PIOB and PIOC clock enabling */
*AT91C_PMC_PCER = 1 << AT91C_ID_PIOB;
*AT91C_PMC_PCER = 1 << AT91C_ID_PIOC;
/*
* configure PC0-PC3 as input without pull ups, so RS485 driver enable
* (CMC-PU2) and digital outputs (CMC-BASIC) are deactivated.
*/
pioc->PIO_ODR = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
AT91C_PIO_PC2 | AT91C_PIO_PC3;
pioc->PIO_PPUDR = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
AT91C_PIO_PC2 | AT91C_PIO_PC3;
pioc->PIO_PER = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
AT91C_PIO_PC2 | AT91C_PIO_PC3;
/*
* On CMC-PU2 board configure PB3-PB6 to input without pull ups to
* clear the duo LEDs (the external pull downs assure a proper
* signal). On CMC-BASIC set PB3-PB6 to output and drive it
* high, to configure current meassurement on AINx.
*/
if (hw_detect() & CMC_PU2) {
piob->PIO_ODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
AT91C_PIO_PB5 | AT91C_PIO_PB6;
}
else if (hw_detect() & CMC_BASIC) {
piob->PIO_SODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
AT91C_PIO_PB5 | AT91C_PIO_PB6;
piob->PIO_OER = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
AT91C_PIO_PB5 | AT91C_PIO_PB6;
}
piob->PIO_PPUDR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
AT91C_PIO_PB5 | AT91C_PIO_PB6;
piob->PIO_PER = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
AT91C_PIO_PB5 | AT91C_PIO_PB6;
/*
* arch number of CMC_PU2-Board. MACH_TYPE_CMC_PU2 is not supported in
* the linuxarm kernel, yet.
*/
/* gd->bd->bi_arch_number = MACH_TYPE_CMC_PU2; */
gd->bd->bi_arch_number = 251;
/* adress of boot parameters */
......@@ -65,3 +112,30 @@ int dram_init (void)
gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
return 0;
}
int checkboard (void)
{
if (hw_detect() & CMC_PU2)
puts ("Board: CMC-PU2 (Rittal GmbH)\n");
else if (hw_detect() & CMC_BASIC)
puts ("Board: CMC-BASIC (Rittal GmbH)\n");
else
puts ("Board: unknown\n");
return 0;
}
int hw_detect (void)
{
AT91PS_PIO pio = AT91C_BASE_PIOB;
/* PIOB clock enabling */
*AT91C_PMC_PCER = 1 << AT91C_ID_PIOB;
/* configure PB12 as input without pull up */
pio->PIO_ODR = AT91C_PIO_PB12;
pio->PIO_PPUDR = AT91C_PIO_PB12;
pio->PIO_PER = AT91C_PIO_PB12;
/* read board identification pin */
return ((pio->PIO_PDSR & AT91C_PIO_PB12) ? CMC_PU2 : CMC_BASIC);
}
......@@ -665,6 +665,10 @@ typedef struct _AT91S_PDC {
#define AT91C_PIO_PA7 ((unsigned int) 1 << 7) /* Pin Controlled by PA7 */
#define AT91C_PA7_ETXCK_EREFCK ((unsigned int) AT91C_PIO_PA7) /* Ethernet MAC Transmit Clock/Reference Clock */
#define AT91C_PIO_PB3 ((unsigned int) 1 << 3) /* Pin Controlled by PB7 */
#define AT91C_PIO_PB4 ((unsigned int) 1 << 4) /* Pin Controlled by PB7 */
#define AT91C_PIO_PB5 ((unsigned int) 1 << 5) /* Pin Controlled by PB7 */
#define AT91C_PIO_PB6 ((unsigned int) 1 << 6) /* Pin Controlled by PB7 */
#define AT91C_PIO_PB7 ((unsigned int) 1 << 7) /* Pin Controlled by PB7 */
#define AT91C_PIO_PB25 ((unsigned int) 1 << 25) /* Pin Controlled by PB25 */
#define AT91C_PB25_DSR1 ((unsigned int) AT91C_PIO_PB25) /* USART 1 Data Set ready */
......
......@@ -198,7 +198,7 @@ init_fnc_t *init_sequence[] = {
display_banner, /* say that we are here */
dram_init, /* configure available RAM banks */
display_dram_config,
#if defined(CONFIG_VCMA9)
#if defined(CONFIG_VCMA9) || defined (CONFIG_CMC_PU2)
checkboard,
#endif
NULL,
......
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