--- /dev/null
+/*
+ * (C) Copyright 2013 Altera Corporation <www.altera.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _SOCFPGA_DWMMC_H_
+#define _SOCFPGA_DWMMC_H_
+
+extern int socfpga_dwmmc_init(u32 regbase, int bus_width, int index);
+
+#endif /* _SOCFPGA_SDMMC_H_ */
#define CONFIG_SYSMGR_PINMUXGRP_OFFSET (0x400)
+#define SYSMGR_SDMMC_CTRL_SET(smplsel, drvsel) \
+ ((((drvsel) << 0) & 0x7) | (((smplsel) << 3) & 0x38))
+
+struct socfpga_system_manager {
+ u32 siliconid1;
+ u32 siliconid2;
+ u32 _pad_0x8_0xf[2];
+ u32 wddbg;
+ u32 bootinfo;
+ u32 hpsinfo;
+ u32 parityinj;
+ u32 fpgaintfgrp_gbl;
+ u32 fpgaintfgrp_indiv;
+ u32 fpgaintfgrp_module;
+ u32 _pad_0x2c_0x2f;
+ u32 scanmgrgrp_ctrl;
+ u32 _pad_0x34_0x3f[3];
+ u32 frzctrl_vioctrl;
+ u32 _pad_0x44_0x4f[3];
+ u32 frzctrl_hioctrl;
+ u32 frzctrl_src;
+ u32 frzctrl_hwctrl;
+ u32 _pad_0x5c_0x5f;
+ u32 emacgrp_ctrl;
+ u32 emacgrp_l3master;
+ u32 _pad_0x68_0x6f[2];
+ u32 dmagrp_ctrl;
+ u32 dmagrp_persecurity;
+ u32 _pad_0x78_0x7f[2];
+ u32 iswgrp_handoff[8];
+ u32 _pad_0xa0_0xbf[8];
+ u32 romcodegrp_ctrl;
+ u32 romcodegrp_cpu1startaddr;
+ u32 romcodegrp_initswstate;
+ u32 romcodegrp_initswlastld;
+ u32 romcodegrp_bootromswstate;
+ u32 __pad_0xd4_0xdf[3];
+ u32 romcodegrp_warmramgrp_enable;
+ u32 romcodegrp_warmramgrp_datastart;
+ u32 romcodegrp_warmramgrp_length;
+ u32 romcodegrp_warmramgrp_execution;
+ u32 romcodegrp_warmramgrp_crc;
+ u32 __pad_0xf4_0xff[3];
+ u32 romhwgrp_ctrl;
+ u32 _pad_0x104_0x107;
+ u32 sdmmcgrp_ctrl;
+ u32 sdmmcgrp_l3master;
+ u32 nandgrp_bootstrap;
+ u32 nandgrp_l3master;
+ u32 usbgrp_l3master;
+ u32 _pad_0x11c_0x13f[9];
+ u32 eccgrp_l2;
+ u32 eccgrp_ocram;
+ u32 eccgrp_usb0;
+ u32 eccgrp_usb1;
+ u32 eccgrp_emac0;
+ u32 eccgrp_emac1;
+ u32 eccgrp_dma;
+ u32 eccgrp_can0;
+ u32 eccgrp_can1;
+ u32 eccgrp_nand;
+ u32 eccgrp_qspi;
+ u32 eccgrp_sdmmc;
+};
+
#endif /* _SYSTEM_MANAGER_H_ */
--- /dev/null
+
+--------------------------------------------
+SOCFPGA Documentation for U-Boot and SPL
+--------------------------------------------
+
+This README is about U-Boot and SPL support for Altera's ARM Cortex-A9MPCore
+based SOCFPGA. To know more about the hardware itself, please refer to
+www.altera.com.
+
+
+--------------------------------------------
+socfpga_dw_mmc
+--------------------------------------------
+Here are macro and detailed configuration required to enable DesignWare SDMMC
+controller support within SOCFPGA
+
+#define CONFIG_MMC
+-> To enable the SD MMC framework support
+
+#define CONFIG_SDMMC_BASE (SOCFPGA_SDMMC_ADDRESS)
+-> The base address of CSR register for DesignWare SDMMC controller
+
+#define CONFIG_GENERIC_MMC
+-> Enable the generic MMC driver
+
+#define CONFIG_SYS_MMC_MAX_BLK_COUNT 256
+-> Using smaller max blk cnt to avoid flooding the limited stack in OCRAM
+
+#define CONFIG_DWMMC
+-> Enable the common DesignWare SDMMC controller framework
+
+#define CONFIG_SOCFPGA_DWMMC
+-> Enable the SOCFPGA specific driver for DesignWare SDMMC controller
+
+#define CONFIG_SOCFPGA_DWMMC_FIFO_DEPTH 1024
+-> The FIFO depth for SOCFPGA DesignWare SDMMC controller
+
+#define CONFIG_SOCFPGA_DWMMC_DRVSEL 3
+-> Phase-shifted clock of sdmmc_clk for controller to drive command and data to
+the card to meet hold time requirements. SD clock is running at 50MHz and
+drvsel is set to shift 135 degrees (3 * 45 degrees). With that, the hold time
+is 135 / 360 * 20ns = 7.5ns.
+
+#define CONFIG_SOCFPGA_DWMMC_SMPSEL 0
+-> Phase-shifted clock of sdmmc_clk used to sample the command and data from
+the card
+
+#define CONFIG_SOCFPGA_DWMMC_BUS_WIDTH 4
+-> Bus width of data line which either 1, 4 or 8 and based on board routing.
+
+#define CONFIG_SOCFPGA_DWMMC_BUS_HZ 50000000
+-> The clock rate to controller. Do note the controller have a wrapper which
+divide the clock from PLL by 4.
obj-$(CONFIG_DWMMC) += dw_mmc.o
obj-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o
obj-$(CONFIG_ZYNQ_SDHCI) += zynq_sdhci.o
+obj-$(CONFIG_SOCFPGA_DWMMC) += socfpga_dw_mmc.o
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_SPL_MMC_BOOT) += fsl_esdhc_spl.o
else
--- /dev/null
+/*
+ * (C) Copyright 2013 Altera Corporation <www.altera.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <dwmmc.h>
+#include <asm/arch/dwmmc.h>
+#include <asm/arch/clock_manager.h>
+#include <asm/arch/system_manager.h>
+
+static const struct socfpga_clock_manager *clock_manager_base =
+ (void *)SOCFPGA_CLKMGR_ADDRESS;
+static const struct socfpga_system_manager *system_manager_base =
+ (void *)SOCFPGA_SYSMGR_ADDRESS;
+
+static char *SOCFPGA_NAME = "SOCFPGA DWMMC";
+
+static void socfpga_dwmci_clksel(struct dwmci_host *host)
+{
+ unsigned int drvsel;
+ unsigned int smplsel;
+
+ /* Disable SDMMC clock. */
+ clrbits_le32(&clock_manager_base->per_pll_en,
+ CLKMGR_PERPLLGRP_EN_SDMMCCLK_MASK);
+
+ /* Configures drv_sel and smpl_sel */
+ drvsel = CONFIG_SOCFPGA_DWMMC_DRVSEL;
+ smplsel = CONFIG_SOCFPGA_DWMMC_SMPSEL;
+
+ debug("%s: drvsel %d smplsel %d\n", __func__, drvsel, smplsel);
+ writel(SYSMGR_SDMMC_CTRL_SET(smplsel, drvsel),
+ &system_manager_base->sdmmcgrp_ctrl);
+
+ debug("%s: SYSMGR_SDMMCGRP_CTRL_REG = 0x%x\n", __func__,
+ readl(&system_manager_base->sdmmcgrp_ctrl));
+
+ /* Enable SDMMC clock */
+ setbits_le32(&clock_manager_base->per_pll_en,
+ CLKMGR_PERPLLGRP_EN_SDMMCCLK_MASK);
+}
+
+int socfpga_dwmmc_init(u32 regbase, int bus_width, int index)
+{
+ struct dwmci_host *host = NULL;
+ host = calloc(sizeof(struct dwmci_host), 1);
+ if (!host) {
+ printf("dwmci_host calloc fail!\n");
+ return -1;
+ }
+
+ host->name = SOCFPGA_NAME;
+ host->ioaddr = (void *)regbase;
+ host->buswidth = bus_width;
+ host->clksel = socfpga_dwmci_clksel;
+ host->dev_index = index;
+ /* fixed clock divide by 4 which due to the SDMMC wrapper */
+ host->bus_hz = CONFIG_SOCFPGA_DWMMC_BUS_HZ;
+ host->fifoth_val = MSIZE(0x2) |
+ RX_WMARK(CONFIG_SOCFPGA_DWMMC_FIFO_DEPTH / 2 - 1) |
+ TX_WMARK(CONFIG_SOCFPGA_DWMMC_FIFO_DEPTH / 2);
+
+ return add_dwmci(host, host->bus_hz, 400000);
+}
+
projects / oweals / u-boot.git / commitdiff