summaryrefslogtreecommitdiffstats
path: root/arch/arm/cpu/at91-common/spl_at91.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/cpu/at91-common/spl_at91.c')
-rw-r--r--arch/arm/cpu/at91-common/spl_at91.c124
1 files changed, 0 insertions, 124 deletions
diff --git a/arch/arm/cpu/at91-common/spl_at91.c b/arch/arm/cpu/at91-common/spl_at91.c
deleted file mode 100644
index 89f588be45..0000000000
--- a/arch/arm/cpu/at91-common/spl_at91.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * (C) Copyright 2014 DENX Software Engineering
- * Heiko Schocher <hs@denx.de>
- *
- * Based on:
- * Copyright (C) 2013 Atmel Corporation
- * Bo Shen <voice.shen@atmel.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/at91_common.h>
-#include <asm/arch/at91sam9_matrix.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>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static void enable_ext_reset(void)
-{
- struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
-
- writel(AT91_RSTC_KEY | AT91_RSTC_MR_URSTEN, &rstc->mr);
-}
-
-void lowlevel_clock_init(void)
-{
- struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
-
- if (!(readl(&pmc->sr) & AT91_PMC_MOSCS)) {
- /* Enable Main Oscillator */
- writel(AT91_PMC_MOSCS | (0x40 << 8), &pmc->mor);
-
- /* Wait until Main Oscillator is stable */
- while (!(readl(&pmc->sr) & AT91_PMC_MOSCS))
- ;
- }
-
- /* After stabilization, switch to Main Oscillator */
- if ((readl(&pmc->mckr) & AT91_PMC_CSS) == AT91_PMC_CSS_SLOW) {
- unsigned long tmp;
-
- tmp = readl(&pmc->mckr);
- tmp &= ~AT91_PMC_CSS;
- tmp |= AT91_PMC_CSS_MAIN;
- writel(tmp, &pmc->mckr);
- while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY))
- ;
-
- tmp &= ~AT91_PMC_PRES;
- tmp |= AT91_PMC_PRES_1;
- writel(tmp, &pmc->mckr);
- while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY))
- ;
- }
-
- return;
-}
-
-void __weak matrix_init(void)
-{
-}
-
-void __weak at91_spl_board_init(void)
-{
-}
-
-void spl_board_init(void)
-{
- struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
-
- lowlevel_clock_init();
- at91_disable_wdt();
-
- /*
- * At this stage the main oscillator is supposed to be enabled
- * PCK = MCK = MOSC
- */
- writel(0x00, &pmc->pllicpr);
-
- /* Configure PLLA = MOSC * (PLL_MULA + 1) / PLL_DIVA */
- at91_plla_init(CONFIG_SYS_AT91_PLLA);
-
- /* PCK = PLLA = 2 * MCK */
- at91_mck_init(CONFIG_SYS_MCKR);
-
- /* Switch MCK on PLLA output */
- at91_mck_init(CONFIG_SYS_MCKR_CSS);
-
-#if defined(CONFIG_SYS_AT91_PLLB)
- /* Configure PLLB */
- at91_pllb_init(CONFIG_SYS_AT91_PLLB);
-#endif
-
- /* Enable External Reset */
- enable_ext_reset();
-
- /* Initialize matrix */
- matrix_init();
-
- gd->arch.mck_rate_hz = CONFIG_SYS_MASTER_CLOCK;
- /*
- * init timer long enough for using in spl.
- */
- timer_init();
-
- /* enable clocks for all PIOs */
- at91_periph_clk_enable(ATMEL_ID_PIOA);
- at91_periph_clk_enable(ATMEL_ID_PIOB);
- at91_periph_clk_enable(ATMEL_ID_PIOC);
- /* init console */
- at91_seriald_hw_init();
- preloader_console_init();
-
- mem_init();
-
- at91_spl_board_init();
-}
OpenPOWER on IntegriCloud