The Boot ROM on PH1-LD11/LD20 exports built-in APIs to load images from an eMMC device. They are useful to reduce the memory footprint of SPL, rather than compiling the whole MMC framework. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>master
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/*
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* Copyright (C) 2016 Socionext Inc. |
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <spl.h> |
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#include <linux/io.h> |
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#include <asm/processor.h> |
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#include "../soc-info.h" |
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void spl_board_announce_boot_device(void) |
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{ |
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printf("eMMC"); |
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} |
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struct uniphier_romfunc_table { |
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void *mmc_send_cmd; |
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void *mmc_card_blockaddr; |
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void *mmc_switch_part; |
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void *mmc_load_image; |
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}; |
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static const struct uniphier_romfunc_table uniphier_ld11_romfunc_table = { |
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.mmc_send_cmd = (void *)0x20d8, |
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.mmc_card_blockaddr = (void *)0x1b68, |
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.mmc_switch_part = (void *)0x1c38, |
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.mmc_load_image = (void *)0x2e48, |
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}; |
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static const struct uniphier_romfunc_table uniphier_ld20_romfunc_table = { |
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.mmc_send_cmd = (void *)0x2130, |
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.mmc_card_blockaddr = (void *)0x1ba0, |
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.mmc_switch_part = (void *)0x1c70, |
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.mmc_load_image = (void *)0x2ef0, |
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}; |
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int uniphier_rom_get_mmc_funcptr(int (**send_cmd)(u32, u32), |
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int (**card_blockaddr)(u32), |
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int (**switch_part)(int), |
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int (**load_image)(u32, uintptr_t, u32)) |
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{ |
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const struct uniphier_romfunc_table *table; |
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switch (uniphier_get_soc_type()) { |
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case SOC_UNIPHIER_LD11: |
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table = &uniphier_ld11_romfunc_table; |
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break; |
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case SOC_UNIPHIER_LD20: |
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table = &uniphier_ld20_romfunc_table; |
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break; |
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default: |
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printf("unsupported SoC\n"); |
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return -EINVAL; |
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} |
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*send_cmd = table->mmc_send_cmd; |
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*card_blockaddr = table->mmc_card_blockaddr; |
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*switch_part = table->mmc_switch_part; |
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*load_image = table->mmc_load_image; |
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return 0; |
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} |
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int spl_board_load_image(void) |
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{ |
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int (*send_cmd)(u32 cmd, u32 arg); |
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int (*card_blockaddr)(u32 rca); |
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int (*switch_part)(int part); |
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int (*load_image)(u32 dev_addr, uintptr_t load_addr, u32 block_cnt); |
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u32 dev_addr = CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR; |
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const u32 rca = 0x1000; /* RCA assigned by Boot ROM */ |
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int ret; |
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ret = uniphier_rom_get_mmc_funcptr(&send_cmd, &card_blockaddr, |
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&switch_part, &load_image); |
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if (ret) |
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return ret; |
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/*
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* deselect card before SEND_CSD command. |
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* Do not check the return code. It fails, but it is OK. |
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*/ |
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(*send_cmd)(0x071a0000, 0); /* CMD7 (arg=0) */ |
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/* reset CMD Line */ |
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writeb(0x6, 0x5a00022f); |
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while (readb(0x5a00022f)) |
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cpu_relax(); |
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ret = (*card_blockaddr)(rca); |
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if (ret) { |
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debug("card is block addressing\n"); |
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} else { |
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debug("card is byte addressing\n"); |
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dev_addr *= 512; |
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} |
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ret = (*send_cmd)(0x071a0000, rca << 16); /* CMD7: select card again */ |
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if (ret) |
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printf("failed to select card\n"); |
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ret = (*switch_part)(1); /* Switch to Boot Partition 1 */ |
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if (ret) |
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printf("failed to switch partition\n"); |
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ret = (*load_image)(dev_addr, CONFIG_SYS_TEXT_BASE, 1); |
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if (ret) { |
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printf("failed to load image\n"); |
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return ret; |
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} |
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ret = spl_parse_image_header((void *)CONFIG_SYS_TEXT_BASE); |
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if (ret) |
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return ret; |
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ret = (*load_image)(dev_addr, spl_image.load_addr, |
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spl_image.size / 512); |
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if (ret) { |
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printf("failed to load image\n"); |
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return ret; |
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} |
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return 0; |
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} |
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