From 5a4c9c22872725d9b02fb11fdcec063ccea9536f Mon Sep 17 00:00:00 2001
From: Bo Shen <voice.shen@atmel.com>
Date: Mon, 15 Dec 2014 13:24:38 +0800
Subject: ARM: atmel: sama5d4ek: enable SPL support

The sama5d4ek support boot up from NAND flash, SD/MMC card and
also the SPI flash.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
---
 board/atmel/sama5d4ek/sama5d4ek.c | 85 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)

(limited to 'board/atmel')

diff --git a/board/atmel/sama5d4ek/sama5d4ek.c b/board/atmel/sama5d4ek/sama5d4ek.c
index d8ff648957..46e504131c 100644
--- a/board/atmel/sama5d4ek/sama5d4ek.c
+++ b/board/atmel/sama5d4ek/sama5d4ek.c
@@ -10,6 +10,7 @@
 #include <asm/arch/at91_common.h>
 #include <asm/arch/at91_pmc.h>
 #include <asm/arch/at91_rstc.h>
+#include <asm/arch/atmel_mpddrc.h>
 #include <asm/arch/atmel_usba_udc.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/clk.h>
@@ -325,3 +326,87 @@ int board_eth_init(bd_t *bis)
 
 	return rc;
 }
+
+/* SPL */
+#ifdef CONFIG_SPL_BUILD
+void spl_board_init(void)
+{
+#ifdef CONFIG_SYS_USE_MMC
+	sama5d4ek_mci1_hw_init();
+#elif CONFIG_SYS_USE_NANDFLASH
+	sama5d4ek_nand_hw_init();
+#elif CONFIG_SYS_USE_SERIALFLASH
+	sama5d4ek_spi0_hw_init();
+#endif
+}
+
+static void ddr2_conf(struct atmel_mpddr *ddr2)
+{
+	ddr2->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM);
+
+	ddr2->cr = (ATMEL_MPDDRC_CR_NC_COL_10 |
+		    ATMEL_MPDDRC_CR_NR_ROW_14 |
+		    ATMEL_MPDDRC_CR_CAS_DDR_CAS3 |
+		    ATMEL_MPDDRC_CR_NB_8BANKS |
+		    ATMEL_MPDDRC_CR_NDQS_DISABLED |
+		    ATMEL_MPDDRC_CR_DECOD_INTERLEAVED |
+		    ATMEL_MPDDRC_CR_UNAL_SUPPORTED);
+
+	ddr2->rtr = 0x2b0;
+
+	ddr2->tpr0 = (8 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |
+		      3 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |
+		      3 << ATMEL_MPDDRC_TPR0_TWR_OFFSET |
+		      10 << ATMEL_MPDDRC_TPR0_TRC_OFFSET |
+		      3 << ATMEL_MPDDRC_TPR0_TRP_OFFSET |
+		      2 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET |
+		      2 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET |
+		      2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET);
+
+	ddr2->tpr1 = (2 << ATMEL_MPDDRC_TPR1_TXP_OFFSET |
+		      200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET |
+		      25 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET |
+		      23 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET);
+
+	ddr2->tpr2 = (7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET |
+		      2 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET |
+		      3 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET |
+		      2 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET |
+		      8 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET);
+}
+
+void mem_init(void)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+	struct atmel_mpddr ddr2;
+
+	ddr2_conf(&ddr2);
+
+	/* enable MPDDR clock */
+	at91_periph_clk_enable(ATMEL_ID_MPDDRC);
+	writel(0x4, &pmc->scer);
+
+	/* DDRAM2 Controller initialize */
+	ddr2_init(ATMEL_BASE_DDRCS, &ddr2);
+}
+
+void at91_pmc_init(void)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+	u32 tmp;
+
+	tmp = AT91_PMC_PLLAR_29 |
+	      AT91_PMC_PLLXR_PLLCOUNT(0x3f) |
+	      AT91_PMC_PLLXR_MUL(87) |
+	      AT91_PMC_PLLXR_DIV(1);
+	at91_plla_init(tmp);
+
+	writel(0x0 << 8, &pmc->pllicpr);
+
+	tmp = AT91_PMC_MCKR_H32MXDIV |
+	      AT91_PMC_MCKR_PLLADIV_2 |
+	      AT91_PMC_MCKR_MDIV_3 |
+	      AT91_PMC_MCKR_CSS_PLLA;
+	at91_mck_init(tmp);
+}
+#endif
-- 
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