summaryrefslogtreecommitdiffstats
path: root/qemu/roms/u-boot/arch/arm/imx-common/cpu.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/roms/u-boot/arch/arm/imx-common/cpu.c')
-rw-r--r--qemu/roms/u-boot/arch/arm/imx-common/cpu.c182
1 files changed, 182 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/arm/imx-common/cpu.c b/qemu/roms/u-boot/arch/arm/imx-common/cpu.c
new file mode 100644
index 000000000..a77c4decc
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/imx-common/cpu.c
@@ -0,0 +1,182 @@
+/*
+ * (C) Copyright 2007
+ * Sascha Hauer, Pengutronix
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/crm_regs.h>
+#include <ipu_pixfmt.h>
+
+#ifdef CONFIG_FSL_ESDHC
+#include <fsl_esdhc.h>
+#endif
+
+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);
+
+ switch (cause) {
+ case 0x00001:
+ case 0x00011:
+ return "POR";
+ case 0x00004:
+ return "CSU";
+ case 0x00008:
+ return "IPP USER";
+ case 0x00010:
+ return "WDOG";
+ case 0x00020:
+ return "JTAG HIGH-Z";
+ case 0x00040:
+ return "JTAG SW";
+ case 0x10000:
+ return "WARM BOOT";
+ default:
+ return "unknown reset";
+ }
+}
+
+#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
+#if defined(CONFIG_MX53)
+#define MEMCTL_BASE ESDCTL_BASE_ADDR
+#else
+#define MEMCTL_BASE MMDC_P0_BASE_ADDR
+#endif
+static const unsigned char col_lookup[] = {9, 10, 11, 8, 12, 9, 9, 9};
+static const unsigned char bank_lookup[] = {3, 2};
+
+struct esd_mmdc_regs {
+ uint32_t ctl;
+ uint32_t pdc;
+ uint32_t otc;
+ uint32_t cfg0;
+ uint32_t cfg1;
+ uint32_t cfg2;
+ uint32_t misc;
+ uint32_t scr;
+ uint32_t ref;
+ uint32_t rsvd1;
+ uint32_t rsvd2;
+ uint32_t rwd;
+ uint32_t or;
+ uint32_t mrr;
+ uint32_t cfg3lp;
+ uint32_t mr4;
+};
+
+#define ESD_MMDC_CTL_GET_ROW(mdctl) ((ctl >> 24) & 7)
+#define ESD_MMDC_CTL_GET_COLUMN(mdctl) ((ctl >> 20) & 7)
+#define ESD_MMDC_CTL_GET_WIDTH(mdctl) ((ctl >> 16) & 3)
+#define ESD_MMDC_CTL_GET_CS1(mdctl) ((ctl >> 30) & 1)
+#define ESD_MMDC_MISC_GET_BANK(mdmisc) ((misc >> 5) & 1)
+
+unsigned imx_ddr_size(void)
+{
+ struct esd_mmdc_regs *mem = (struct esd_mmdc_regs *)MEMCTL_BASE;
+ unsigned ctl = readl(&mem->ctl);
+ unsigned misc = readl(&mem->misc);
+ int bits = 11 + 0 + 0 + 1; /* row + col + bank + width */
+
+ bits += ESD_MMDC_CTL_GET_ROW(ctl);
+ bits += col_lookup[ESD_MMDC_CTL_GET_COLUMN(ctl)];
+ bits += bank_lookup[ESD_MMDC_MISC_GET_BANK(misc)];
+ bits += ESD_MMDC_CTL_GET_WIDTH(ctl);
+ bits += ESD_MMDC_CTL_GET_CS1(ctl);
+ return 1 << bits;
+}
+#endif
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+
+const char *get_imx_type(u32 imxtype)
+{
+ switch (imxtype) {
+ case MXC_CPU_MX6Q:
+ return "6Q"; /* Quad-core version of the mx6 */
+ case MXC_CPU_MX6D:
+ return "6D"; /* Dual-core version of the mx6 */
+ case MXC_CPU_MX6DL:
+ return "6DL"; /* Dual Lite version of the mx6 */
+ case MXC_CPU_MX6SOLO:
+ return "6SOLO"; /* Solo version of the mx6 */
+ case MXC_CPU_MX6SL:
+ return "6SL"; /* Solo-Lite version of the mx6 */
+ case MXC_CPU_MX51:
+ return "51";
+ case MXC_CPU_MX53:
+ return "53";
+ default:
+ return "??";
+ }
+}
+
+int print_cpuinfo(void)
+{
+ u32 cpurev;
+
+ cpurev = get_cpu_rev();
+
+ printf("CPU: Freescale i.MX%s rev%d.%d at %d MHz\n",
+ get_imx_type((cpurev & 0xFF000) >> 12),
+ (cpurev & 0x000F0) >> 4,
+ (cpurev & 0x0000F) >> 0,
+ 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
+/*
+ * Initializes on-chip MMC controllers.
+ * to override, implement board_mmc_init()
+ */
+int cpu_mmc_init(bd_t *bis)
+{
+ return fsl_esdhc_mmc_init(bis);
+}
+#endif
+
+u32 get_ahb_clk(void)
+{
+ struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ u32 reg, ahb_podf;
+
+ reg = __raw_readl(&imx_ccm->cbcdr);
+ reg &= MXC_CCM_CBCDR_AHB_PODF_MASK;
+ ahb_podf = reg >> MXC_CCM_CBCDR_AHB_PODF_OFFSET;
+
+ return get_periph_clk() / (ahb_podf + 1);
+}
+
+#if defined(CONFIG_VIDEO_IPUV3)
+void arch_preboot_os(void)
+{
+ /* disable video before launching O/S */
+ ipuv3_fb_shutdown();
+}
+#endif