9242ef12f0
There is a couple of problems with the UART vector setup for the 5307 ColdFire UART. The ICR register access should be 8bit, not 32bit. The address of the UIVR register is wrong, it needs to be offset into the MBAR register region. Fix these. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
161 lines
4.2 KiB
C
161 lines
4.2 KiB
C
/***************************************************************************/
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/*
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* linux/arch/m68knommu/platform/5307/config.c
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*
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* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
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* Copyright (C) 2000, Lineo (www.lineo.com)
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*/
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/***************************************************************************/
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <asm/machdep.h>
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#include <asm/coldfire.h>
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#include <asm/mcfsim.h>
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#include <asm/mcfuart.h>
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#include <asm/mcfwdebug.h>
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/***************************************************************************/
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void coldfire_reset(void);
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extern unsigned int mcf_timervector;
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extern unsigned int mcf_profilevector;
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extern unsigned int mcf_timerlevel;
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/***************************************************************************/
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/*
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* Some platforms need software versions of the GPIO data registers.
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*/
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unsigned short ppdata;
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unsigned char ledbank = 0xff;
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/***************************************************************************/
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static struct mcf_platform_uart m5307_uart_platform[] = {
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{
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.mapbase = MCF_MBAR + MCFUART_BASE1,
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.irq = 73,
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},
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{
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.mapbase = MCF_MBAR + MCFUART_BASE2,
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.irq = 74,
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},
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{ },
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};
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static struct platform_device m5307_uart = {
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.name = "mcfuart",
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.id = 0,
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.dev.platform_data = m5307_uart_platform,
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};
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static struct platform_device *m5307_devices[] __initdata = {
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&m5307_uart,
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};
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/***************************************************************************/
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static void __init m5307_uart_init_line(int line, int irq)
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{
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if (line == 0) {
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writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
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writeb(irq, MCF_MBAR + MCFUART_BASE1 + MCFUART_UIVR);
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mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
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} else if (line == 1) {
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writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
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writeb(irq, MCF_MBAR + MCFUART_BASE2 + MCFUART_UIVR);
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mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
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}
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}
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static void __init m5307_uarts_init(void)
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{
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const int nrlines = ARRAY_SIZE(m5307_uart_platform);
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int line;
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for (line = 0; (line < nrlines); line++)
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m5307_uart_init_line(line, m5307_uart_platform[line].irq);
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}
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/***************************************************************************/
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void mcf_autovector(unsigned int vec)
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{
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volatile unsigned char *mbar;
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if ((vec >= 25) && (vec <= 31)) {
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mbar = (volatile unsigned char *) MCF_MBAR;
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vec = 0x1 << (vec - 24);
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*(mbar + MCFSIM_AVR) |= vec;
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mcf_setimr(mcf_getimr() & ~vec);
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}
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}
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/***************************************************************************/
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void mcf_settimericr(unsigned int timer, unsigned int level)
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{
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volatile unsigned char *icrp;
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unsigned int icr, imr;
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if (timer <= 2) {
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switch (timer) {
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case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
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default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
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}
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icrp = (volatile unsigned char *) (MCF_MBAR + icr);
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*icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
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mcf_setimr(mcf_getimr() & ~imr);
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}
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}
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/***************************************************************************/
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void __init config_BSP(char *commandp, int size)
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{
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mcf_setimr(MCFSIM_IMR_MASKALL);
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#if defined(CONFIG_NETtel) || \
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defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA)
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/* Copy command line from FLASH to local buffer... */
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memcpy(commandp, (char *) 0xf0004000, size);
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commandp[size-1] = 0;
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/* Different timer setup - to prevent device clash */
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mcf_timervector = 30;
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mcf_profilevector = 31;
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mcf_timerlevel = 6;
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#endif
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mach_reset = coldfire_reset;
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#ifdef CONFIG_BDM_DISABLE
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/*
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* Disable the BDM clocking. This also turns off most of the rest of
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* the BDM device. This is good for EMC reasons. This option is not
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* incompatible with the memory protection option.
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*/
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wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK);
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#endif
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}
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/***************************************************************************/
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static int __init init_BSP(void)
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{
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m5307_uarts_init();
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platform_add_devices(m5307_devices, ARRAY_SIZE(m5307_devices));
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return 0;
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}
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arch_initcall(init_BSP);
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/***************************************************************************/
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