diff options
Diffstat (limited to 'board/freescale/p1_p2_rdb/spl_minimal.c')
-rw-r--r-- | board/freescale/p1_p2_rdb/spl_minimal.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/board/freescale/p1_p2_rdb/spl_minimal.c b/board/freescale/p1_p2_rdb/spl_minimal.c new file mode 100644 index 0000000000..96a4d1cb0a --- /dev/null +++ b/board/freescale/p1_p2_rdb/spl_minimal.c @@ -0,0 +1,84 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <ns16550.h> +#include <asm/io.h> +#include <nand.h> +#include <linux/compiler.h> +#include <asm/fsl_law.h> +#include <fsl_ddr_sdram.h> +#include <asm/global_data.h> + +DECLARE_GLOBAL_DATA_PTR; +#define SYSCLK_MASK 0x00200000 +#define BOARDREV_MASK 0x10100000 + +#define SYSCLK_66 66666666 +#define SYSCLK_100 100000000 + +unsigned long get_board_sys_clk(ulong dummy) +{ + ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR); + u32 val_gpdat, sysclk_gpio; + + val_gpdat = in_be32(&pgpio->gpdat); + sysclk_gpio = val_gpdat & SYSCLK_MASK; + + if (sysclk_gpio == 0) + return SYSCLK_66; + else + return SYSCLK_100; + + return 0; +} + +void board_init_f(ulong bootflag) +{ + u32 plat_ratio; + ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; + +#if defined(CONFIG_SYS_NAND_BR_PRELIM) && defined(CONFIG_SYS_NAND_OR_PRELIM) + set_lbc_br(0, CONFIG_SYS_NAND_BR_PRELIM); + set_lbc_or(0, CONFIG_SYS_NAND_OR_PRELIM); +#endif + + /* initialize selected port with appropriate baud rate */ + plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO; + plat_ratio >>= 1; + gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio; + + NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, + gd->bus_clk / 16 / CONFIG_BAUDRATE); + + puts("\nNAND boot... "); + + /* copy code to RAM and jump to it - this should not return */ + /* NOTE - code has to be copied out of NAND buffer before + * other blocks can be read. + */ + relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE); +} + +void board_init_r(gd_t *gd, ulong dest_addr) +{ + puts("\nSecond program loader running in sram..."); + nand_boot(); +} + +void putc(char c) +{ + if (c == '\n') + NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r'); + + NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c); +} + +void puts(const char *str) +{ + while (*str) + putc(*str++); +} |