diff options
Diffstat (limited to 'board/renesas/sh7752evb/spi-boot.c')
-rw-r--r-- | board/renesas/sh7752evb/spi-boot.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/board/renesas/sh7752evb/spi-boot.c b/board/renesas/sh7752evb/spi-boot.c deleted file mode 100644 index 91565d44d7..0000000000 --- a/board/renesas/sh7752evb/spi-boot.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Copyright (C) 2012 Renesas Solutions Corp. - * - * This file is subject to the terms and conditions of the GNU Lesser - * General Public License. See the file "COPYING.LIB" in the main - * directory of this archive for more details. - */ - -#include <common.h> - -#define CONFIG_RAM_BOOT_PHYS CONFIG_SYS_TEXT_BASE -#define CONFIG_SPI_ADDR 0x00000000 -#define CONFIG_SPI_LENGTH CONFIG_SYS_MONITOR_LEN -#define CONFIG_RAM_BOOT CONFIG_SYS_TEXT_BASE - -#define SPIWDMADR 0xFE001018 -#define SPIWDMCNTR 0xFE001020 -#define SPIDMCOR 0xFE001028 -#define SPIDMINTSR 0xFE001188 -#define SPIDMINTMR 0xFE001190 - -#define SPIDMINTSR_DMEND 0x00000004 - -#define TBR 0xFE002000 -#define RBR 0xFE002000 - -#define CR1 0xFE002008 -#define CR2 0xFE002010 -#define CR3 0xFE002018 -#define CR4 0xFE002020 - -/* CR1 */ -#define SPI_TBE 0x80 -#define SPI_TBF 0x40 -#define SPI_RBE 0x20 -#define SPI_RBF 0x10 -#define SPI_PFONRD 0x08 -#define SPI_SSDB 0x04 -#define SPI_SSD 0x02 -#define SPI_SSA 0x01 - -/* CR2 */ -#define SPI_RSTF 0x80 -#define SPI_LOOPBK 0x40 -#define SPI_CPOL 0x20 -#define SPI_CPHA 0x10 -#define SPI_L1M0 0x08 - -/* CR4 */ -#define SPI_TBEI 0x80 -#define SPI_TBFI 0x40 -#define SPI_RBEI 0x20 -#define SPI_RBFI 0x10 -#define SPI_SpiS0 0x02 -#define SPI_SSS 0x01 - -#define spi_write(val, addr) (*(volatile unsigned long *)(addr)) = val -#define spi_read(addr) (*(volatile unsigned long *)(addr)) - -/* M25P80 */ -#define M25_READ 0x03 - -#define __uses_spiboot2 __attribute__((section(".spiboot2.text"))) -static void __uses_spiboot2 spi_reset(void) -{ - int timeout = 0x00100000; - - /* Make sure the last transaction is finalized */ - spi_write(0x00, CR3); - spi_write(0x02, CR1); - while (!(spi_read(CR4) & SPI_SpiS0)) { - if (timeout-- < 0) - break; - } - spi_write(0x00, CR1); - - spi_write(spi_read(CR2) | SPI_RSTF, CR2); /* fifo reset */ - spi_write(spi_read(CR2) & ~SPI_RSTF, CR2); - - spi_write(0, SPIDMCOR); -} - -static void __uses_spiboot2 spi_read_flash(void *buf, unsigned long addr, - unsigned long len) -{ - spi_write(M25_READ, TBR); - spi_write((addr >> 16) & 0xFF, TBR); - spi_write((addr >> 8) & 0xFF, TBR); - spi_write(addr & 0xFF, TBR); - - spi_write(SPIDMINTSR_DMEND, SPIDMINTSR); - spi_write((unsigned long)buf, SPIWDMADR); - spi_write(len & 0xFFFFFFE0, SPIWDMCNTR); - spi_write(1, SPIDMCOR); - - spi_write(0xff, CR3); - spi_write(spi_read(CR1) | SPI_SSDB, CR1); - spi_write(spi_read(CR1) | SPI_SSA, CR1); - - while (!(spi_read(SPIDMINTSR) & SPIDMINTSR_DMEND)) - ; - - /* Nagate SP0-SS0 */ - spi_write(0, CR1); -} - -void __uses_spiboot2 spiboot_main(void) -{ - void (*_start)(void) = (void *)CONFIG_SYS_TEXT_BASE; - - spi_reset(); - spi_read_flash((void *)CONFIG_RAM_BOOT_PHYS, CONFIG_SPI_ADDR, - CONFIG_SPI_LENGTH); - - _start(); -} |