{"id":296,"date":"2018-03-13T13:42:04","date_gmt":"2018-03-13T05:42:04","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=296"},"modified":"2018-03-13T13:42:04","modified_gmt":"2018-03-13T05:42:04","slug":"mini6410%e6%9d%bfuboot%e7%9a%84nand_cp-c","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=296","title":{"rendered":"mini6410\u677fuboot\u7684Nand_cp.c"},"content":{"rendered":"
#include <common.h><\/p>\n

#ifdef CONFIG_S3C64XX
\n#include <asm\/io.h>
\n#include <linux\/mtd\/nand.h>
\n#include <regs.h><\/p>\n

\/*
\n* address format
\n*\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 17 16\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 9 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0
\n* ——————————————–
\n* | block(12bit) | page(5bit) | offset(9bit) |
\n* ——————————————–
\n*\/<\/p>\n

static int nandll_read_page (uchar *buf, ulong addr, int large_block)
\n{
\nint i;
\nint page_size = 512;<\/p>\n

if (large_block)
\npage_size = 2048;<\/p>\n

NAND_ENABLE_CE(); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/*\u7247\u9009\u4f7f\u80fd*\/<\/p>\n

NFCMD_REG = NAND_CMD_READ0; \/*\u8bfb\u547d\u4ee4*\/<\/p>\n

\/* Write Address *\/
\nNFADDR_REG = 0; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/*\u5199\u5217\u5730\u57401\uff0c\u6b63\u5e38\u5730\u5740\u7684a0-a7\uff0c\u56e0\u4e3a\u4e00\u6b21\u8bfb\u53d6\u4e00\u9875\uff0c\u6240\u4ee5\u5217\u5730\u5740\u503c\u90fd\u4e3a0\uff0c2^11\u521a\u597d2K\u4e00\u9875*\/<\/p>\n

if (large_block)
\nNFADDR_REG = 0; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/*\u5199\u5217\u5730\u57402\uff0c\u6b63\u5e38\u5730\u5740\u7684a8-a11*\/<\/p>\n

NFADDR_REG = (addr) & 0xff; \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/*\u5199\u884c\u5730\u57401\uff0c\u6b63\u5e38\u5730\u5740\u7684a12-a19*\/
\nNFADDR_REG = (addr >> 8) & 0xff;\u00a0\/*\u5199\u884c\u5730\u57402\uff0c\u6b63\u5e38\u5730\u5740\u7684a20-a27*\/<\/p><\/div>\n

\u00a0\u00a0\u00a0\u00a0 NFADDR_REG = (addr >> 16) & 0xff;\/*\u5199\u884c\u5730\u57403\uff0c\u6b63\u5e38\u5730\u5740\u7684a28\uff0c256MB\u7684\u8bdd\uff0c\u53ea\u670929\u4f4d\u5730\u5740\u5c31\u591f\u4e86*\/<\/div>\n
\nif (large_block)
\nNFCMD_REG = NAND_CMD_READSTART; \/*\u5b9e\u9645\u8bfb\u5f00\u59cb*\/<\/p>\n

NF_TRANSRnB(); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/*\u7b49\u5f85RnB\u53d8\u62101\uff0cready*\/<\/p>\n

\/* for compatibility(2460). u32 cannot be used. by scsuh *\/
\nfor(i=0; i < page_size; i++) {
\n*buf++ = NFDATA8_REG; \u00a0\/*\u8bfb\u53d6\u4e00\u9875*\/
\n}<\/p>\n

NAND_DISABLE_CE(); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/*\u8bfb\u5b8c\uff0c\u53bb\u4f7f\u80fd*\/
\nreturn 0;
\n}<\/p>\n

\/*
\n* Read data from NAND.
\n*\/
\nstatic int nandll_read_blocks (ulong dst_addr, ulong size, int large_block)
\n{
\nuchar *buf = (uchar *)dst_addr;
\nint i;
\nuint page_shift = 9; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/*\u4e00\u822c512\u5b57\u8282*<\/p>\n

if (large_block)
\npage_shift = 11; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/*\u5927\u57572KB\u5b57\u8282*<\/p>\n

\/* Read pages *\/ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/*\u6bcf\u6b21\u8bfb\u4e00\u9875*\/
\nfor (i = 0; i < (0x3c000>>page_shift); i++, buf+=(1<<page_shift)) {
\nnandll_read_page(buf, i, large_block);
\n}<\/p>\n

return 0;
\n}<\/p>\n

int copy_uboot_to_ram (void)
\n{
\nint large_block = 0;
\nint i;
\nvu_char id;<\/p>\n

NAND_ENABLE_CE(); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0@\u4f7f\u80fdNAND Xm0CSn2\u7684\u7247\u9009\u4fe1\u53f7\uff0c\u5c31\u662f\u7f6e0x70200004 NFCONT\u5bc4\u5b58\u5668\u7684Reg_nCE0\u4e3a0\u3002
\nNFCMD_REG = NAND_CMD_READID; \u00a0@\u53d1\u9001\u8bfb\u53d6ID\u547d\u4ee4\uff0c\u65f6\u5e8f\u53c2\u8003K9F2G08U0A\u624b\u518c\u3002
\nNFADDR_REG =\u00a0 0x00; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 @\u53d1\u9001\u5730\u5740\u4e3a0<\/p>\n

\/* wait for a while *\/
\nfor (i=0; i<200; i++); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0@\u7b49\u5f85\u64cd\u4f5c\u5b8c\u6210
\nid = NFDATA8_REG; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 @\u8bfb\u53d6ID\u7684\u7b2c5\u5b57\u8282\uff0c\u82af\u7247\u5927\u5c0f\u4fe1\u606f\uff0c\u8fd9\u91cc\u4e0d\u9700\u8981\uff0c\u56e0\u4e3a\u662f\u5c0f\u7aef\u65b9\u5f0f\uff0c\u6240\u4ee5\u5148\u8bfb\u5230\u7b2c5\u5b57\u8282\uff0c\u7136\u540e4\uff0c3\uff0c2\uff0c1\u5b57\u8282\u3002
\nid = NFDATA8_REG; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 @\u8bfb\u53d6ID\u7684\u7b2c4\u5b57\u8282\uff0c\u82af\u7247\u7684\u5757\u5927\u5c0f\uff0c\u9875\u5927\u5c0f\u7b49\uff0c\u82af\u7247\u5927\u5c0f=nBlocks\/\u82af\u7247*nPages\/\u5757*Bytes\/\u9875<\/p>\n

if (id > 0x80)
\nlarge_block = 1; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 @\u5757>=256KB\u5219\u8bbe\u7f6e\u4e3a\u5927\u5757<\/p>\n

\/* read NAND Block.
\n* 128KB ->240KB because of U-Boot size increase. by scsuh
\n* So, read 0x3c000 bytes not 0x20000(128KB).
\n*\/
\nreturn nandll_read_blocks(CFG_PHY_UBOOT_BASE, 0x3c000, large_block); \/*\u4eceNANDFLASH\u8bfb\u53d6240KB\u6570\u636e\u52300x57e00000*\/
\n}<\/p>\n

#endif<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

#include <common.h> #ifdef CONFIG_S3C64XX #includ …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[48,235,49],"class_list":["post-296","post","type-post","status-publish","format-standard","hentry","category-6","tag-mini6410","tag-nand_cp-c","tag-uboot"],"views":1507,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=296"}],"version-history":[{"count":1,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/296\/revisions"}],"predecessor-version":[{"id":297,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/296\/revisions\/297"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=296"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}