mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 00:21:06 +00:00
691d719db7
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
161 lines
4.9 KiB
C
161 lines
4.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2014 Angelo Dureghello <angelo@sysam.it>
|
|
*
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <init.h>
|
|
#include <watchdog.h>
|
|
#include <asm/immap.h>
|
|
#include <asm/io.h>
|
|
|
|
#if defined(CONFIG_M5307)
|
|
/*
|
|
* Simple mcf5307 chip select module init.
|
|
*
|
|
* Note: this chip has an issue reported in the device "errata":
|
|
* MCF5307ER Rev 4.2 reports @ section 35:
|
|
* Corrupted Return PC in Exception Stack Frame
|
|
* When processing an autovectored interrupt an error can occur that
|
|
* causes 0xFFFFFFFF to be written as the return PC value in the
|
|
* exception stack frame. The problem is caused by a conflict between
|
|
* an internal autovector access and a chip select mapped to the IACK
|
|
* address space (0xFFFFXXXX).
|
|
* Workaround:
|
|
* Set the C/I bit in the chip select mask register (CSMR) for the
|
|
* chip select that is mapped to 0xFFFFXXXX.
|
|
* This will prevent the chip select from asserting for IACK accesses.
|
|
*/
|
|
|
|
#define MCF5307_SP_ERR_FIX(cs_base, mask) \
|
|
do { \
|
|
if (((cs_base<<16)+(in_be32(&mask)&0xffff0000)) >= \
|
|
0xffff0000) \
|
|
setbits_be32(&mask, CSMR_CI); \
|
|
} while (0)
|
|
|
|
void init_csm(void)
|
|
{
|
|
csm_t *csm = (csm_t *)(MMAP_CSM);
|
|
|
|
#if (defined(CONFIG_SYS_CS0_BASE) && defined(CONFIG_SYS_CS0_MASK) && \
|
|
defined(CONFIG_SYS_CS0_CTRL))
|
|
out_be16(&csm->csar0, CONFIG_SYS_CS0_BASE);
|
|
out_be32(&csm->csmr0, CONFIG_SYS_CS0_MASK);
|
|
out_be16(&csm->cscr0, CONFIG_SYS_CS0_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS0_BASE, csm->csmr0);
|
|
#else
|
|
#warning "Chip Select 0 are not initialized/used"
|
|
#endif
|
|
#if (defined(CONFIG_SYS_CS1_BASE) && defined(CONFIG_SYS_CS1_MASK) && \
|
|
defined(CONFIG_SYS_CS1_CTRL))
|
|
out_be16(&csm->csar1, CONFIG_SYS_CS1_BASE);
|
|
out_be32(&csm->csmr1, CONFIG_SYS_CS1_MASK);
|
|
out_be16(&csm->cscr1, CONFIG_SYS_CS1_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS1_BASE, csm->csmr1);
|
|
#endif
|
|
#if (defined(CONFIG_SYS_CS2_BASE) && defined(CONFIG_SYS_CS2_MASK) && \
|
|
defined(CONFIG_SYS_CS2_CTRL))
|
|
out_be16(&csm->csar2, CONFIG_SYS_CS2_BASE);
|
|
out_be32(&csm->csmr2, CONFIG_SYS_CS2_MASK);
|
|
out_be16(&csm->cscr2, CONFIG_SYS_CS2_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS2_BASE, csm->csmr2);
|
|
#endif
|
|
#if (defined(CONFIG_SYS_CS3_BASE) && defined(CONFIG_SYS_CS3_MASK) && \
|
|
defined(CONFIG_SYS_CS3_CTRL))
|
|
out_be16(&csm->csar3, CONFIG_SYS_CS3_BASE);
|
|
out_be32(&csm->csmr3, CONFIG_SYS_CS3_MASK);
|
|
out_be16(&csm->cscr3, CONFIG_SYS_CS3_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS3_BASE, csm->csmr3);
|
|
#endif
|
|
#if (defined(CONFIG_SYS_CS4_BASE) && defined(CONFIG_SYS_CS4_MASK) && \
|
|
defined(CONFIG_SYS_CS4_CTRL))
|
|
out_be16(&csm->csar4, CONFIG_SYS_CS4_BASE);
|
|
out_be32(&csm->csmr4, CONFIG_SYS_CS4_MASK);
|
|
out_be16(&csm->cscr4, CONFIG_SYS_CS4_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS4_BASE, csm->csmr4);
|
|
#endif
|
|
#if (defined(CONFIG_SYS_CS5_BASE) && defined(CONFIG_SYS_CS5_MASK) && \
|
|
defined(CONFIG_SYS_CS5_CTRL))
|
|
out_be16(&csm->csar5, CONFIG_SYS_CS5_BASE);
|
|
out_be32(&csm->csmr5, CONFIG_SYS_CS5_MASK);
|
|
out_be16(&csm->cscr5, CONFIG_SYS_CS5_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS5_BASE, csm->csmr5);
|
|
#endif
|
|
#if (defined(CONFIG_SYS_CS6_BASE) && defined(CONFIG_SYS_CS6_MASK) && \
|
|
defined(CONFIG_SYS_CS6_CTRL))
|
|
out_be16(&csm->csar6, CONFIG_SYS_CS6_BASE);
|
|
out_be32(&csm->csmr6, CONFIG_SYS_CS6_MASK);
|
|
out_be16(&csm->cscr6, CONFIG_SYS_CS6_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS6_BASE, csm->csmr6);
|
|
#endif
|
|
#if (defined(CONFIG_SYS_CS7_BASE) && defined(CONFIG_SYS_CS7_MASK) && \
|
|
defined(CONFIG_SYS_CS7_CTRL))
|
|
out_be16(&csm->csar7, CONFIG_SYS_CS7_BASE);
|
|
out_be32(&csm->csmr7, CONFIG_SYS_CS7_MASK);
|
|
out_be16(&csm->cscr7, CONFIG_SYS_CS7_CTRL);
|
|
MCF5307_SP_ERR_FIX(CONFIG_SYS_CS7_BASE, csm->csmr7);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Set up the memory map and initialize registers
|
|
*/
|
|
void cpu_init_f(void)
|
|
{
|
|
sim_t *sim = (sim_t *)(MMAP_SIM);
|
|
|
|
out_8(&sim->sypcr, 0x00);
|
|
out_8(&sim->swivr, 0x0f);
|
|
out_8(&sim->swsr, 0x00);
|
|
out_8(&sim->mpark, 0x00);
|
|
|
|
intctrl_t *icr = (intctrl_t *)(MMAP_INTC);
|
|
|
|
/* timer 2 not masked */
|
|
out_be32(&icr->imr, 0xfffffbff);
|
|
|
|
out_8(&icr->icr0, 0x00); /* sw watchdog */
|
|
out_8(&icr->icr1, 0x00); /* timer 1 */
|
|
out_8(&icr->icr2, 0x88); /* timer 2 */
|
|
out_8(&icr->icr3, 0x00); /* i2c */
|
|
out_8(&icr->icr4, 0x00); /* uart 0 */
|
|
out_8(&icr->icr5, 0x00); /* uart 1 */
|
|
out_8(&icr->icr6, 0x00); /* dma 0 */
|
|
out_8(&icr->icr7, 0x00); /* dma 1 */
|
|
out_8(&icr->icr8, 0x00); /* dma 2 */
|
|
out_8(&icr->icr9, 0x00); /* dma 3 */
|
|
|
|
/* Chipselect Init */
|
|
init_csm();
|
|
|
|
/* enable data/instruction cache now */
|
|
icache_enable();
|
|
}
|
|
|
|
/*
|
|
* initialize higher level parts of CPU like timers
|
|
*/
|
|
int cpu_init_r(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void uart_port_conf(int port)
|
|
{
|
|
}
|
|
|
|
void arch_preboot_os(void)
|
|
{
|
|
/*
|
|
* OS can change interrupt offsets and are about to boot the OS so
|
|
* we need to make sure we disable all async interrupts.
|
|
*/
|
|
intctrl_t *icr = (intctrl_t *)(MMAP_INTC);
|
|
|
|
out_8(&icr->icr1, 0x00); /* timer 1 */
|
|
out_8(&icr->icr2, 0x00); /* timer 2 */
|
|
}
|
|
#endif
|