mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 08:59:33 +00:00
65cc0e2a65
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
147 lines
3 KiB
C
147 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2013 Atmel Corporation
|
|
* Bo Shen <voice.shen@atmel.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <hang.h>
|
|
#include <init.h>
|
|
#include <log.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/at91_common.h>
|
|
#include <asm/arch/at91_pit.h>
|
|
#include <asm/arch/at91_pmc.h>
|
|
#include <asm/arch/at91_rstc.h>
|
|
#include <asm/arch/at91_wdt.h>
|
|
#include <asm/arch/clk.h>
|
|
#include <spl.h>
|
|
|
|
static void switch_to_main_crystal_osc(void)
|
|
{
|
|
struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
|
|
u32 tmp;
|
|
|
|
tmp = readl(&pmc->mor);
|
|
tmp &= ~AT91_PMC_MOR_OSCOUNT(0xff);
|
|
tmp &= ~AT91_PMC_MOR_KEY(0xff);
|
|
tmp |= AT91_PMC_MOR_MOSCEN;
|
|
tmp |= AT91_PMC_MOR_OSCOUNT(8);
|
|
tmp |= AT91_PMC_MOR_KEY(0x37);
|
|
writel(tmp, &pmc->mor);
|
|
while (!(readl(&pmc->sr) & AT91_PMC_IXR_MOSCS))
|
|
;
|
|
|
|
#if defined(CONFIG_SAMA5D2)
|
|
/* Enable a measurement of the external oscillator */
|
|
tmp = readl(&pmc->mcfr);
|
|
tmp |= AT91_PMC_MCFR_CCSS_XTAL_OSC;
|
|
tmp |= AT91_PMC_MCFR_RCMEAS;
|
|
writel(tmp, &pmc->mcfr);
|
|
|
|
while (!(readl(&pmc->mcfr) & AT91_PMC_MCFR_MAINRDY))
|
|
;
|
|
|
|
if (!(readl(&pmc->mcfr) & AT91_PMC_MCFR_MAINF_MASK))
|
|
hang();
|
|
#endif
|
|
|
|
tmp = readl(&pmc->mor);
|
|
/*
|
|
* some boards have an external oscillator with driving.
|
|
* in this case we need to disable the internal SoC driving (bypass mode)
|
|
*/
|
|
#if defined(CONFIG_SPL_AT91_MCK_BYPASS)
|
|
tmp |= AT91_PMC_MOR_OSCBYPASS;
|
|
#else
|
|
tmp &= ~AT91_PMC_MOR_OSCBYPASS;
|
|
#endif
|
|
tmp &= ~AT91_PMC_MOR_KEY(0xff);
|
|
tmp |= AT91_PMC_MOR_KEY(0x37);
|
|
writel(tmp, &pmc->mor);
|
|
|
|
tmp = readl(&pmc->mor);
|
|
tmp |= AT91_PMC_MOR_MOSCSEL;
|
|
tmp &= ~AT91_PMC_MOR_KEY(0xff);
|
|
tmp |= AT91_PMC_MOR_KEY(0x37);
|
|
writel(tmp, &pmc->mor);
|
|
|
|
while (!(readl(&pmc->sr) & AT91_PMC_IXR_MOSCSELS))
|
|
;
|
|
|
|
#if !defined(CONFIG_SAMA5D2)
|
|
/* Wait until MAINRDY field is set to make sure main clock is stable */
|
|
while (!(readl(&pmc->mcfr) & AT91_PMC_MAINRDY))
|
|
;
|
|
#endif
|
|
|
|
#if !defined(CONFIG_SAMA5D4) && !defined(CONFIG_SAMA5D2)
|
|
tmp = readl(&pmc->mor);
|
|
tmp &= ~AT91_PMC_MOR_MOSCRCEN;
|
|
tmp &= ~AT91_PMC_MOR_KEY(0xff);
|
|
tmp |= AT91_PMC_MOR_KEY(0x37);
|
|
writel(tmp, &pmc->mor);
|
|
#endif
|
|
}
|
|
|
|
__weak void matrix_init(void)
|
|
{
|
|
/* This only be used for sama5d4 soc now */
|
|
}
|
|
|
|
__weak void redirect_int_from_saic_to_aic(void)
|
|
{
|
|
/* This only be used for sama5d4 soc now */
|
|
}
|
|
|
|
/* empty stub to satisfy current lowlevel_init, can be removed any time */
|
|
void s_init(void)
|
|
{
|
|
}
|
|
|
|
void board_init_f(ulong dummy)
|
|
{
|
|
int ret;
|
|
|
|
if (IS_ENABLED(CONFIG_OF_CONTROL)) {
|
|
ret = spl_early_init();
|
|
if (ret) {
|
|
debug("spl_early_init() failed: %d\n", ret);
|
|
hang();
|
|
}
|
|
}
|
|
switch_to_main_crystal_osc();
|
|
|
|
#ifdef CONFIG_SAMA5D2
|
|
configure_2nd_sram_as_l2_cache();
|
|
#endif
|
|
|
|
#if !defined(CONFIG_WDT_AT91)
|
|
/* disable watchdog */
|
|
at91_disable_wdt();
|
|
#endif
|
|
|
|
/* PMC configuration */
|
|
at91_pmc_init();
|
|
|
|
at91_clock_init(CFG_SYS_AT91_MAIN_CLOCK);
|
|
|
|
matrix_init();
|
|
|
|
redirect_int_from_saic_to_aic();
|
|
|
|
timer_init();
|
|
|
|
board_early_init_f();
|
|
|
|
mem_init();
|
|
|
|
ret = spl_init();
|
|
if (ret) {
|
|
debug("spl_init() failed: %d\n", ret);
|
|
hang();
|
|
}
|
|
|
|
preloader_console_init();
|
|
|
|
}
|