lwmon5.c

来自「最新版的u-boot,2008-10-18发布」· C语言 代码 · 共 600 行 · 第 1/2 页

	addr = mfdcr(plb3_acr);
	mtdcr(plb3_acr, addr | 0x80000000);

	/*-------------------------------------------------------------------------+
	  | Set priority for all PLB4 devices to 0.
	  +-------------------------------------------------------------------------*/
	mfsdr(sdr_amp0, addr);
	mtsdr(sdr_amp0, (addr & 0x000000FF) | 0x0000FF00);
	addr = mfdcr(plb4_acr) | 0xa0000000;	/* Was 0x8---- */
	mtdcr(plb4_acr, addr);

	/*-------------------------------------------------------------------------+
	  | Set Nebula PLB4 arbiter to fair mode.
	  +-------------------------------------------------------------------------*/
	/* Segment0 */
	addr = (mfdcr(plb0_acr) & ~plb0_acr_ppm_mask) | plb0_acr_ppm_fair;
	addr = (addr & ~plb0_acr_hbu_mask) | plb0_acr_hbu_enabled;
	addr = (addr & ~plb0_acr_rdp_mask) | plb0_acr_rdp_4deep;
	addr = (addr & ~plb0_acr_wrp_mask) | plb0_acr_wrp_2deep;
	mtdcr(plb0_acr, addr);

	/* Segment1 */
	addr = (mfdcr(plb1_acr) & ~plb1_acr_ppm_mask) | plb1_acr_ppm_fair;
	addr = (addr & ~plb1_acr_hbu_mask) | plb1_acr_hbu_enabled;
	addr = (addr & ~plb1_acr_rdp_mask) | plb1_acr_rdp_4deep;
	addr = (addr & ~plb1_acr_wrp_mask) | plb1_acr_wrp_2deep;
	mtdcr(plb1_acr, addr);

	return 1;
}
#endif	/* defined(CONFIG_PCI) */

/*************************************************************************
 *  pci_target_init
 *
 *	The bootstrap configuration provides default settings for the pci
 *	inbound map (PIM). But the bootstrap config choices are limited and
 *	may not be sufficient for a given board.
 *
 ************************************************************************/
#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
void pci_target_init(struct pci_controller *hose)
{
	/*--------------------------------------------------------------------------+
	 * Set up Direct MMIO registers
	 *--------------------------------------------------------------------------*/
	/*--------------------------------------------------------------------------+
	  | PowerPC440EPX PCI Master configuration.
	  | Map one 1Gig range of PLB/processor addresses to PCI memory space.
	  |   PLB address 0xA0000000-0xDFFFFFFF ==> PCI address 0xA0000000-0xDFFFFFFF
	  |   Use byte reversed out routines to handle endianess.
	  | Make this region non-prefetchable.
	  +--------------------------------------------------------------------------*/
	out32r(PCIX0_PMM0MA, 0x00000000);	/* PMM0 Mask/Attribute - disabled b4 setting */
	out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE);	/* PMM0 Local Address */
	out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE);	/* PMM0 PCI Low Address */
	out32r(PCIX0_PMM0PCIHA, 0x00000000);	/* PMM0 PCI High Address */
	out32r(PCIX0_PMM0MA, 0xE0000001);	/* 512M + No prefetching, and enable region */

	out32r(PCIX0_PMM1MA, 0x00000000);	/* PMM0 Mask/Attribute - disabled b4 setting */
	out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2); /* PMM0 Local Address */
	out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2);	/* PMM0 PCI Low Address */
	out32r(PCIX0_PMM1PCIHA, 0x00000000);	/* PMM0 PCI High Address */
	out32r(PCIX0_PMM1MA, 0xE0000001);	/* 512M + No prefetching, and enable region */

	out32r(PCIX0_PTM1MS, 0x00000001);	/* Memory Size/Attribute */
	out32r(PCIX0_PTM1LA, 0);	/* Local Addr. Reg */
	out32r(PCIX0_PTM2MS, 0);	/* Memory Size/Attribute */
	out32r(PCIX0_PTM2LA, 0);	/* Local Addr. Reg */

	/*--------------------------------------------------------------------------+
	 * Set up Configuration registers
	 *--------------------------------------------------------------------------*/

	/* Program the board's subsystem id/vendor id */
	pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
			      CFG_PCI_SUBSYS_VENDORID);
	pci_write_config_word(0, PCI_SUBSYSTEM_ID, CFG_PCI_SUBSYS_ID);

	/* Configure command register as bus master */
	pci_write_config_word(0, PCI_COMMAND, PCI_COMMAND_MASTER);

	/* 240nS PCI clock */
	pci_write_config_word(0, PCI_LATENCY_TIMER, 1);

	/* No error reporting */
	pci_write_config_word(0, PCI_ERREN, 0);

	pci_write_config_dword(0, PCI_BRDGOPT2, 0x00000101);

}
#endif				/* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */

/*************************************************************************
 *  pci_master_init
 *
 ************************************************************************/
#if defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_INIT)
void pci_master_init(struct pci_controller *hose)
{
	unsigned short temp_short;

	/*--------------------------------------------------------------------------+
	  | Write the PowerPC440 EP PCI Configuration regs.
	  |   Enable PowerPC440 EP to be a master on the PCI bus (PMM).
	  |   Enable PowerPC440 EP to act as a PCI memory target (PTM).
	  +--------------------------------------------------------------------------*/
	pci_read_config_word(0, PCI_COMMAND, &temp_short);
	pci_write_config_word(0, PCI_COMMAND,
			      temp_short | PCI_COMMAND_MASTER |
			      PCI_COMMAND_MEMORY);
}
#endif				/* defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_INIT) */

/*************************************************************************
 *  is_pci_host
 *
 *	This routine is called to determine if a pci scan should be
 *	performed. With various hardware environments (especially cPCI and
 *	PPMC) it's insufficient to depend on the state of the arbiter enable
 *	bit in the strap register, or generic host/adapter assumptions.
 *
 *	Rather than hard-code a bad assumption in the general 440 code, the
 *	440 pci code requires the board to decide at runtime.
 *
 *	Return 0 for adapter mode, non-zero for host (monarch) mode.
 *
 *
 ************************************************************************/
#if defined(CONFIG_PCI)
int is_pci_host(struct pci_controller *hose)
{
	/* Cactus is always configured as host. */
	return (1);
}
#endif				/* defined(CONFIG_PCI) */

void hw_watchdog_reset(void)
{
	int val;
#if defined(CONFIG_WD_MAX_RATE)
	unsigned long long ct = get_ticks();

	/*
	 * Don't allow watch-dog triggering more frequently than
	 * the predefined value CONFIG_WD_MAX_RATE [ticks].
	 */
	if (ct >= gd->wdt_last) {
		if ((ct - gd->wdt_last) < CONFIG_WD_MAX_RATE)
			return;
	} else {
		/* Time base counter had been reset */
		if (((unsigned long long)(-1) - gd->wdt_last + ct) <
		    CONFIG_WD_MAX_RATE)
			return;
	}
	gd->wdt_last = get_ticks();
#endif

	/*
	 * Toggle watchdog output
	 */
	val = gpio_read_out_bit(CFG_GPIO_WATCHDOG) == 0 ? 1 : 0;
	gpio_write_bit(CFG_GPIO_WATCHDOG, val);
}

int do_eeprom_wp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	if (argc < 2) {
		printf("Usage:\n%s\n", cmdtp->usage);
		return 1;
	}

	if ((strcmp(argv[1], "on") == 0)) {
		gpio_write_bit(CFG_GPIO_EEPROM_EXT_WP, 1);
	} else if ((strcmp(argv[1], "off") == 0)) {
		gpio_write_bit(CFG_GPIO_EEPROM_EXT_WP, 0);
	} else {
		printf("Usage:\n%s\n", cmdtp->usage);
		return 1;
	}


	return 0;
}

U_BOOT_CMD(
	eepromwp,	2,	0,	do_eeprom_wp,
	"eepromwp- eeprom write protect off/on\n",
	"<on|off> - enable (on) or disable (off) I2C EEPROM write protect\n"
);

#if defined(CONFIG_VIDEO)
#include <video_fb.h>
#include <mb862xx.h>

extern GraphicDevice mb862xx;

static const gdc_regs init_regs [] =
{
	{0x0100, 0x00000f00},
	{0x0020, 0x801401df},
	{0x0024, 0x00000000},
	{0x0028, 0x00000000},
	{0x002c, 0x00000000},
	{0x0110, 0x00000000},
	{0x0114, 0x00000000},
	{0x0118, 0x01df0280},
	{0x0004, 0x031f0000},
	{0x0008, 0x027f027f},
	{0x000c, 0x015f028f},
	{0x0010, 0x020c0000},
	{0x0014, 0x01df01ea},
	{0x0018, 0x00000000},
	{0x001c, 0x01e00280},
	{0x0100, 0x80010f00},
	{0x0, 0x0}
};

const gdc_regs *board_get_regs (void)
{
	return init_regs;
}

/* Returns Lime base address */
unsigned int board_video_init (void)
{
	/*
	 * Reset Lime controller
	 */
	gpio_write_bit(CFG_GPIO_LIME_S, 1);
	udelay(500);
	gpio_write_bit(CFG_GPIO_LIME_RST, 1);

	/* Lime memory clock adjusted to 100MHz */
	out_be32((void *)CFG_LIME_SDRAM_CLOCK, CFG_LIME_CLOCK_100MHZ);
	/* Wait untill time expired. Because of requirements in lime manual */
	udelay(300);
	/* Write lime controller memory parameters */
	out_be32((void *)CFG_LIME_MMR, CFG_LIME_MMR_VALUE);

	mb862xx.winSizeX = 640;
	mb862xx.winSizeY = 480;
	mb862xx.gdfBytesPP = 2;
	mb862xx.gdfIndex = GDF_15BIT_555RGB;

	return CFG_LIME_BASE_0;
}

#define DEFAULT_BRIGHTNESS 0x64

static void board_backlight_brightness(int brightness)
{
	if (brightness > 0) {
		/* pwm duty, lamp on */
		out_be32((void *)(CFG_FPGA_BASE_0 + 0x00000024), brightness);
		out_be32((void *)(CFG_FPGA_BASE_0 + 0x00000020), 0x701);
	} else {
		/* lamp off */
		out_be32((void *)(CFG_FPGA_BASE_0 + 0x00000024), 0x00);
		out_be32((void *)(CFG_FPGA_BASE_0 + 0x00000020), 0x00);
	}
}

void board_backlight_switch (int flag)
{
	char * param;
	int rc;

	if (flag) {
		param = getenv("brightness");
		rc = param ? simple_strtol(param, NULL, 10) : -1;
		if (rc < 0)
			rc = DEFAULT_BRIGHTNESS;
	} else {
		rc = 0;
	}
	board_backlight_brightness(rc);
}

#if defined(CONFIG_CONSOLE_EXTRA_INFO)
/*
 * Return text to be printed besides the logo.
 */
void video_get_info_str (int line_number, char *info)
{
	if (line_number == 1) {
		strcpy (info, " Board: Lwmon5 (Liebherr Elektronik GmbH)");
	} else {
		info [0] = '\0';
	}
}
#endif
#endif /* CONFIG_VIDEO */

void board_reset(void)
{
	gpio_write_bit(CFG_GPIO_BOARD_RESET, 1);
}