--- /dev/null
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <netdev.h>
+#ifdef CONFIG_FSL_ESDHC
+#include <fsl_esdhc.h>
+#endif
+
+#ifdef CONFIG_FSL_ESDHC
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
+#ifdef CONFIG_MXC_OCOTP
+void enable_ocotp_clk(unsigned char enable)
+{
+ struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+ u32 reg;
+
+ reg = readl(&ccm->ccgr6);
+ if (enable)
+ reg |= CCM_CCGR6_OCOTP_CTRL_MASK;
+ else
+ reg &= ~CCM_CCGR6_OCOTP_CTRL_MASK;
+ writel(reg, &ccm->ccgr6);
+}
+#endif
+
+static u32 get_mcu_main_clk(void)
+{
+ struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+ u32 ccm_ccsr, ccm_cacrr, armclk_div;
+ u32 sysclk_sel, pll_pfd_sel = 0;
+ u32 freq = 0;
+
+ ccm_ccsr = readl(&ccm->ccsr);
+ sysclk_sel = ccm_ccsr & CCM_CCSR_SYS_CLK_SEL_MASK;
+ sysclk_sel >>= CCM_CCSR_SYS_CLK_SEL_OFFSET;
+
+ ccm_cacrr = readl(&ccm->cacrr);
+ armclk_div = ccm_cacrr & CCM_CACRR_ARM_CLK_DIV_MASK;
+ armclk_div >>= CCM_CACRR_ARM_CLK_DIV_OFFSET;
+ armclk_div += 1;
+
+ switch (sysclk_sel) {
+ case 0:
+ freq = FASE_CLK_FREQ;
+ break;
+ case 1:
+ freq = SLOW_CLK_FREQ;
+ break;
+ case 2:
+ pll_pfd_sel = ccm_ccsr & CCM_CCSR_PLL2_PFD_CLK_SEL_MASK;
+ pll_pfd_sel >>= CCM_CCSR_PLL2_PFD_CLK_SEL_OFFSET;
+ if (pll_pfd_sel == 0)
+ freq = PLL2_MAIN_FREQ;
+ else if (pll_pfd_sel == 1)
+ freq = PLL2_PFD1_FREQ;
+ else if (pll_pfd_sel == 2)
+ freq = PLL2_PFD2_FREQ;
+ else if (pll_pfd_sel == 3)
+ freq = PLL2_PFD3_FREQ;
+ else if (pll_pfd_sel == 4)
+ freq = PLL2_PFD4_FREQ;
+ break;
+ case 3:
+ freq = PLL2_MAIN_FREQ;
+ break;
+ case 4:
+ pll_pfd_sel = ccm_ccsr & CCM_CCSR_PLL1_PFD_CLK_SEL_MASK;
+ pll_pfd_sel >>= CCM_CCSR_PLL1_PFD_CLK_SEL_OFFSET;
+ if (pll_pfd_sel == 0)
+ freq = PLL1_MAIN_FREQ;
+ else if (pll_pfd_sel == 1)
+ freq = PLL1_PFD1_FREQ;
+ else if (pll_pfd_sel == 2)
+ freq = PLL1_PFD2_FREQ;
+ else if (pll_pfd_sel == 3)
+ freq = PLL1_PFD3_FREQ;
+ else if (pll_pfd_sel == 4)
+ freq = PLL1_PFD4_FREQ;
+ break;
+ case 5:
+ freq = PLL3_MAIN_FREQ;
+ break;
+ default:
+ printf("unsupported system clock select\n");
+ }
+
+ return freq / armclk_div;
+}
+
+static u32 get_bus_clk(void)
+{
+ struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+ u32 ccm_cacrr, busclk_div;
+
+ ccm_cacrr = readl(&ccm->cacrr);
+
+ busclk_div = ccm_cacrr & CCM_CACRR_BUS_CLK_DIV_MASK;
+ busclk_div >>= CCM_CACRR_BUS_CLK_DIV_OFFSET;
+ busclk_div += 1;
+
+ return get_mcu_main_clk() / busclk_div;
+}
+
+static u32 get_ipg_clk(void)
+{
+ struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+ u32 ccm_cacrr, ipgclk_div;
+
+ ccm_cacrr = readl(&ccm->cacrr);
+
+ ipgclk_div = ccm_cacrr & CCM_CACRR_IPG_CLK_DIV_MASK;
+ ipgclk_div >>= CCM_CACRR_IPG_CLK_DIV_OFFSET;
+ ipgclk_div += 1;
+
+ return get_bus_clk() / ipgclk_div;
+}
+
+static u32 get_uart_clk(void)
+{
+ return get_ipg_clk();
+}
+
+static u32 get_sdhc_clk(void)
+{
+ struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+ u32 ccm_cscmr1, ccm_cscdr2, sdhc_clk_sel, sdhc_clk_div;
+ u32 freq = 0;
+
+ ccm_cscmr1 = readl(&ccm->cscmr1);
+ sdhc_clk_sel = ccm_cscmr1 & CCM_CSCMR1_ESDHC1_CLK_SEL_MASK;
+ sdhc_clk_sel >>= CCM_CSCMR1_ESDHC1_CLK_SEL_OFFSET;
+
+ ccm_cscdr2 = readl(&ccm->cscdr2);
+ sdhc_clk_div = ccm_cscdr2 & CCM_CSCDR2_ESDHC1_CLK_DIV_MASK;
+ sdhc_clk_div >>= CCM_CSCDR2_ESDHC1_CLK_DIV_OFFSET;
+ sdhc_clk_div += 1;
+
+ switch (sdhc_clk_sel) {
+ case 0:
+ freq = PLL3_MAIN_FREQ;
+ break;
+ case 1:
+ freq = PLL3_PFD3_FREQ;
+ break;
+ case 2:
+ freq = PLL1_PFD3_FREQ;
+ break;
+ case 3:
+ freq = get_bus_clk();
+ break;
+ }
+
+ return freq / sdhc_clk_div;
+}
+
+u32 get_fec_clk(void)
+{
+ struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+ u32 ccm_cscmr2, rmii_clk_sel;
+ u32 freq = 0;
+
+ ccm_cscmr2 = readl(&ccm->cscmr2);
+ rmii_clk_sel = ccm_cscmr2 & CCM_CSCMR2_RMII_CLK_SEL_MASK;
+ rmii_clk_sel >>= CCM_CSCMR2_RMII_CLK_SEL_OFFSET;
+
+ switch (rmii_clk_sel) {
+ case 0:
+ freq = ENET_EXTERNAL_CLK;
+ break;
+ case 1:
+ freq = AUDIO_EXTERNAL_CLK;
+ break;
+ case 2:
+ freq = PLL5_MAIN_FREQ;
+ break;
+ case 3:
+ freq = PLL5_MAIN_FREQ / 2;
+ break;
+ }
+
+ return freq;
+}
+
+static u32 get_i2c_clk(void)
+{
+ return get_ipg_clk();
+}
+
+unsigned int mxc_get_clock(enum mxc_clock clk)
+{
+ switch (clk) {
+ case MXC_ARM_CLK:
+ return get_mcu_main_clk();
+ case MXC_BUS_CLK:
+ return get_bus_clk();
+ case MXC_IPG_CLK:
+ return get_ipg_clk();
+ case MXC_UART_CLK:
+ return get_uart_clk();
+ case MXC_ESDHC_CLK:
+ return get_sdhc_clk();
+ case MXC_FEC_CLK:
+ return get_fec_clk();
+ case MXC_I2C_CLK:
+ return get_i2c_clk();
+ default:
+ break;
+ }
+ return -1;
+}
+
+/* Dump some core clocks */
+int do_vf610_showclocks(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ printf("\n");
+ printf("cpu clock : %8d MHz\n", mxc_get_clock(MXC_ARM_CLK) / 1000000);
+ printf("bus clock : %8d MHz\n", mxc_get_clock(MXC_BUS_CLK) / 1000000);
+ printf("ipg clock : %8d MHz\n", mxc_get_clock(MXC_IPG_CLK) / 1000000);
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ clocks, CONFIG_SYS_MAXARGS, 1, do_vf610_showclocks,
+ "display clocks",
+ ""
+);
+
+#ifdef CONFIG_FEC_MXC
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+ struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+ struct fuse_bank *bank = &ocotp->bank[4];
+ struct fuse_bank4_regs *fuse =
+ (struct fuse_bank4_regs *)bank->fuse_regs;
+
+ u32 value = readl(&fuse->mac_addr0);
+ mac[0] = (value >> 8);
+ mac[1] = value;
+
+ value = readl(&fuse->mac_addr1);
+ mac[2] = value >> 24;
+ mac[3] = value >> 16;
+ mac[4] = value >> 8;
+ mac[5] = value;
+}
+#endif
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+static char *get_reset_cause(void)
+{
+ u32 cause;
+ struct src *src_regs = (struct src *)SRC_BASE_ADDR;
+
+ cause = readl(&src_regs->srsr);
+ writel(cause, &src_regs->srsr);
+ cause &= 0xff;
+
+ switch (cause) {
+ case 0x08:
+ return "WDOG";
+ case 0x20:
+ return "JTAG HIGH-Z";
+ case 0x80:
+ return "EXTERNAL RESET";
+ case 0xfd:
+ return "POR";
+ default:
+ return "unknown reset";
+ }
+}
+
+int print_cpuinfo(void)
+{
+ printf("CPU: Freescale Vybrid VF610 at %d MHz\n",
+ mxc_get_clock(MXC_ARM_CLK) / 1000000);
+ printf("Reset cause: %s\n", get_reset_cause());
+
+ return 0;
+}
+#endif
+
+int cpu_eth_init(bd_t *bis)
+{
+ int rc = -ENODEV;
+
+#if defined(CONFIG_FEC_MXC)
+ rc = fecmxc_initialize(bis);
+#endif
+
+ return rc;
+}
+
+#ifdef CONFIG_FSL_ESDHC
+int cpu_mmc_init(bd_t *bis)
+{
+ return fsl_esdhc_mmc_init(bis);
+}
+#endif
+
+int get_clocks(void)
+{
+#ifdef CONFIG_FSL_ESDHC
+ gd->arch.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+#endif
+ return 0;
+}
projects / karo-tx-uboot.git / blobdiff