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3. Проверка и настройка параметров карты (MMC) Здесь в качестве MMC (MultiMedia Card) подразумевается микроSD-карта. Примечание. Внутренняя (встроенная) флеш-память приставки, которая называется eMMC (embedded MMC – встроенная ММС) - это тоже - карта (card). Отличия в этих двух видах 'карт' - только в наличии у eMMC собственного встроенного контроллера и буфера, а у внешней карты - интерфейса для подключения к SD-слоту. Поэтому для загрузки прошивки нет принципиальной разницы - откуда загружаться: с внутренней eMMC или с нешней MMC, т.е. с микроSD-карты (SD - Secure Digital). Если точнее, то современные карты имеют стандарт SDHC(емкость до 32 Gb) и SDXC(емкость выше 32 Gb)
if (work_mode != WORK_MODE_BOOT)
{ pr_info("Is not Boot mode!
");
return 0;
}
Используется драйвер MMC 'sunxi_mmc_tuning.c' ( MMC driver for allwinner sunxi platform). Здесь определяется тип контроллера SD-карты и производится её настройка: SUNXI SDMMC Controller Version:0x40502 ....... write_tuning_try_freq: write ok Pattern compare ok Write tuning pattern ok Лог: Проверка и настройка параметров карты (MMC) try card 2 set card number 2 get card number 2 [00.695][mmc]: mmc driver ver uboot2018:2021-12-20 13:35:00 [00.701][mmc]: get sdc_type fail and use default host:tm4. [00.706][mmc]: Is not Boot mode! [00.709][mmc]: SUNXI SDMMC Controller Version:0x40502 [00.720][mmc]: ************Try SD card 2************ [00.726][mmc]: mmc 2 cmd timeout 100 status 100 [00.730][mmc]: smc 2 err, cmd 8, RTO [00.733][mmc]: mmc 2 close bus gating and reset [00.738][mmc]: mmc 2 cmd timeout 100 status 100 [00.742][mmc]: smc 2 err, cmd 55, RTO [00.746][mmc]: mmc 2 close bus gating and reset [00.750][mmc]: ************Try MMC card 2************ [00.826][mmc]: mmc 2 cmd timeout 100 status 100 [00.830][mmc]: smc 2 err, cmd 8, RTO [00.833][mmc]: mmc 2 close bus gating and reset [00.838][mmc]: mmc 2 cmd timeout 100 status 100 [00.842][mmc]: smc 2 err, cmd 55, RTO [00.846][mmc]: mmc 2 close bus gating and reset [00.862][mmc]: gen_tuning_blk_bus8: total blk 10 [00.866][mmc]: gen_tuning_blk_bus4: total blk 6 [00.870][mmc]: Using 8 bit tuning now [00.912][mmc]: write_tuning_try_freq: write ok [00.917][mmc]: Pattern compare ok [00.920][mmc]: Write tuning pattern ok [00.923][mmc]: ================== HSSDR52_SDR25... [00.928][mmc]: skip freq 400000 [00.931][mmc]: skip freq 25000000 [00.934][mmc]: freq: 2-50000000-64-4 [01.546][mmc]: [0-41|42] [44-63|20] [01.549][mmc]: ================== HS200_SDR104... [01.555][mmc]: skip freq 400000 [01.557][mmc]: skip freq 25000000 [01.560][mmc]: freq: 2-50000000-64-4 [02.122][mmc]: freq: 3-100000000-64-4 [02.632][mmc]: freq: 4-150000000-64-4 [03.109][mmc]: skip freq 200000000 [03.112][mmc]: [0-37|38] [40-63|24] [03.116][mmc]: [0-37|38] [40-63|24] [03.119][mmc]: [0-2|3] [5-37|33] [40-63|24] [03.123][mmc]: ================== HSDDR52_DDR50... [03.128][mmc]: skip freq 400000 [03.131][mmc]: freq: 1-25000000-64-4 [03.704][mmc]: freq: 2-50000000-64-4 [04.229][mmc]: [0-37|38] [40-42|3] [44-52|9] [54-63|10] [04.234][mmc]: [0-37|38] [40-63|24] [04.237][mmc]: ================== HS400... [04.241][mmc]: skip freq 400000 [04.244][mmc]: skip freq 25000000 [04.247][mmc]: freq: 2-50000000 [04.263][mmc]: freq: 3-100000000 [04.278][mmc]: skip freq 150000000 [04.281][mmc]: skip freq 200000000 [04.284][mmc]: speed mode: HS400 [04.287][mmc]: [0-37|38] [39-63|25] [04.291][mmc]: [0-63|64] [04.293][mmc]: skip freq 400000 [04.296][mmc]: skip freq 25000000 [04.299][mmc]: freq: 2-50000000-64-4 [04.709][mmc]: freq: 3-100000000-64-4 [04.907][mmc]: skip freq 150000000 [04.909][mmc]: skip freq 200000000 [04.913][mmc]: [0-10|11] [12-49|38] [04.916][mmc]: [0-23|24] [04.919][mmc]: DS26/SDR12: 0xffffffff 0xffffffff [04.923][mmc]: HSSDR52/SDR25: 0xff15ffff 0xffffffff [04.928][mmc]: HSDDR52/DDR50: 0xff1313ff 0xffffffff [04.932][mmc]: HS200/SDR104: 0x1313ffff 0xffffff15 [04.937][mmc]: HS400: 0x0c1fffff 0xffffffff [04.941][mmc]: HS400: 0x2013ffff 0xffffffff [04.947][mmc]: Best spd md: 4-HS400, freq: 3-100000000, Bus width: 8 [04.953][mmc]: mmc driver ver uboot2018:2021-12-20 13:35:00 [04.958][mmc]: get sdc_type fail and use default host:tm1. [04.964][mmc]: can't find node "mmc0",will add new node [04.968][mmc]: fdt err returned |
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