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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2013 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <ns16550.h>
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#include <asm/io.h>
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#include <nand.h>
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#include <linux/compiler.h>
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#include <asm/fsl_law.h>
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#include <fsl_ddr_sdram.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Fixed sdram init -- doesn't use serial presence detect.
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*/
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static void sdram_init(void)
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{
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struct ccsr_ddr __iomem *ddr =
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(struct ccsr_ddr __iomem *)CONFIG_SYS_FSL_DDR_ADDR;
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__raw_writel(CONFIG_SYS_DDR_CS0_BNDS, &ddr->cs0_bnds);
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__raw_writel(CONFIG_SYS_DDR_CS0_CONFIG, &ddr->cs0_config);
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#if CONFIG_CHIP_SELECTS_PER_CTRL > 1
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__raw_writel(CONFIG_SYS_DDR_CS1_BNDS, &ddr->cs1_bnds);
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__raw_writel(CONFIG_SYS_DDR_CS1_CONFIG, &ddr->cs1_config);
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#endif
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__raw_writel(CONFIG_SYS_DDR_TIMING_3_800, &ddr->timing_cfg_3);
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__raw_writel(CONFIG_SYS_DDR_TIMING_0_800, &ddr->timing_cfg_0);
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__raw_writel(CONFIG_SYS_DDR_TIMING_1_800, &ddr->timing_cfg_1);
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__raw_writel(CONFIG_SYS_DDR_TIMING_2_800, &ddr->timing_cfg_2);
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__raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2);
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__raw_writel(CONFIG_SYS_DDR_MODE_1_800, &ddr->sdram_mode);
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__raw_writel(CONFIG_SYS_DDR_MODE_2_800, &ddr->sdram_mode_2);
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__raw_writel(CONFIG_SYS_DDR_INTERVAL_800, &ddr->sdram_interval);
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__raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init);
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__raw_writel(CONFIG_SYS_DDR_CLK_CTRL_800, &ddr->sdram_clk_cntl);
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__raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_800, &ddr->ddr_wrlvl_cntl);
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__raw_writel(CONFIG_SYS_DDR_TIMING_4, &ddr->timing_cfg_4);
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__raw_writel(CONFIG_SYS_DDR_TIMING_5, &ddr->timing_cfg_5);
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__raw_writel(CONFIG_SYS_DDR_ZQ_CONTROL, &ddr->ddr_zq_cntl);
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/* Set, but do not enable the memory */
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__raw_writel(CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN, &ddr->sdram_cfg);
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asm volatile("sync;isync");
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udelay(500);
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/* Let the controller go */
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out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN);
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set_next_law(CONFIG_SYS_NAND_DDR_LAW, LAW_SIZE_1G, LAW_TRGT_IF_DDR_1);
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}
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void board_init_f(ulong bootflag)
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{
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u32 plat_ratio;
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ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
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/* initialize selected port with appropriate baud rate */
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plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
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plat_ratio >>= 1;
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gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
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NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
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gd->bus_clk / 16 / CONFIG_BAUDRATE);
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puts("\nNAND boot... ");
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/* Initialize the DDR3 */
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sdram_init();
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/* copy code to RAM and jump to it - this should not return */
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/* NOTE - code has to be copied out of NAND buffer before
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* other blocks can be read.
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*/
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relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
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}
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void board_init_r(gd_t *gd, ulong dest_addr)
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{
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nand_boot();
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}
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void putc(char c)
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{
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if (c == '\n')
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NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
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NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
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}
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void puts(const char *str)
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{
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while (*str)
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putc(*str++);
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}
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