D2: Add auto-detection of the SAMSUNG flash chips used in the 2/4/8Gb
models. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16177 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rob Purchase
parent
762ec6ec33
commit
637e26e8e4
1 changed files with 141 additions and 64 deletions
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@ -38,7 +38,6 @@ static bool initialized = false;
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static long next_yield = 0;
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#define MIN_YIELD_PERIOD 2000
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/* TCC780x NAND Flash Controller */
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#define NFC_CMD (*(volatile unsigned long *)0xF0053000)
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@ -49,30 +48,30 @@ static long next_yield = 0;
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#define NFC_IREQ (*(volatile unsigned long *)0xF0053060)
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#define NFC_RST (*(volatile unsigned long *)0xF0053064)
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/* NFC_CTRL flags */
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#define NFC_16BIT (1<<26)
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#define NFC_CS0 (1<<23)
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#define NFC_CS1 (1<<22)
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#define NFC_READY (1<<20)
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/* Chip characteristics, initialised by nand_get_chip_info() */
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#if defined(COWON_D2)
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/*
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===== Temporary D2 testing code =====
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static int page_size = 0;
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static int spare_size = 0;
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static int pages_per_block = 0;
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static int total_blocks = 0;
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static int total_pages = 0;
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static int row_cycles = 0;
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static int col_cycles = 0;
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static int total_banks = 0;
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(assumes SAMSUNG K9LAG08UOM (2GB) in 1, 2 or 4 banks)
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/* Static page buffer */
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Manufacturer Id: {0xec, 0xd5, 0x55, 0x25, 0x68}
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#define MAX_PAGE_SIZE 4096
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#define MAX_SPARE_SIZE 128
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*/
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#define PAGE_SIZE 2048
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#define SPARE_SIZE 64
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#define PAGES_PER_BLOCK 128
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#define TOTAL_BLOCKS 8192
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#define TOTAL_PAGES (TOTAL_BLOCKS * PAGES_PER_BLOCK)
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#define COL_CYCLES 2
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#define ROW_CYCLES 3
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static int page_buf[(MAX_PAGE_SIZE+MAX_SPARE_SIZE)/4];
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static int page_buf[PAGE_SIZE/4];
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static void nand_chip_select(int chip)
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{
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@ -108,10 +107,9 @@ static void nand_chip_select(int chip)
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}
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}
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static void nand_read_id(int chip, unsigned char* id_buf)
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{
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int i;
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/* Enable NFC bus clock */
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BCLKCTR |= DEV_NAND;
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@ -150,7 +148,7 @@ static void nand_read_id(int chip, unsigned char* id_buf)
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}
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static void nand_read_uid(int chip)
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static void nand_read_uid(int chip, unsigned int* uid_buf)
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{
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int i;
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@ -177,8 +175,8 @@ static void nand_read_uid(int chip)
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NFC_CMD = 0x00;
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/* Write row/column address */
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for (i = 0; i < COL_CYCLES; i++) NFC_SADDR = 0;
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for (i = 0; i < ROW_CYCLES; i++) NFC_SADDR = 0;
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for (i = 0; i < col_cycles; i++) NFC_SADDR = 0;
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for (i = 0; i < row_cycles; i++) NFC_SADDR = 0;
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/* End of read */
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NFC_CMD = 0x30;
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@ -189,7 +187,7 @@ static void nand_read_uid(int chip)
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/* Copy data to buffer (data repeats after 8 words) */
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for (i = 0; i < 8; i++)
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{
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page_buf[i] = NFC_WDATA;
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uid_buf[i] = NFC_WDATA;
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}
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/* Reset the chip back to normal mode */
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@ -225,14 +223,14 @@ static void nand_read(int chip, int row, int column, int size)
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NFC_CMD = 0x00;
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/* Write column address */
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for (i = 0; i < COL_CYCLES; i++)
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for (i = 0; i < col_cycles; i++)
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{
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NFC_SADDR = column & 0xFF;
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column = column >> 8;
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}
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/* Write row address */
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for (i = 0; i < ROW_CYCLES; i++)
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for (i = 0; i < row_cycles; i++)
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{
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NFC_SADDR = row & 0xFF;
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row = row >> 8;
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@ -258,56 +256,38 @@ static void nand_read(int chip, int row, int column, int size)
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/* TEMP testing function */
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#include <string.h>
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#include "lcd.h"
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extern int line;
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static unsigned char str_buf[MAX_PAGE_SIZE];
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static void nand_test(void)
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{
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int i,j,row;
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unsigned char id_buf[5];
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unsigned char str_buf[PAGE_SIZE];
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int pages_per_mb = 1048576/page_size;
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/* Display ID codes & UID block for each bank */
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for (i = 0; i < 4; i++)
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{
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printf("NAND bank %d:", i);
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nand_read_id(i, id_buf);
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printf("ID: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x",
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id_buf[0],id_buf[1],id_buf[2],id_buf[3],id_buf[4]);
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nand_read_uid(i);
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for (j = 0; j < 8; j += 4)
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{
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printf("0x%08x 0x%08x 0x%08x 0x%08x",
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page_buf[j],page_buf[j+1],page_buf[j+2],page_buf[j+3]);
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}
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line++;
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}
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printf("%d banks", total_banks);
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printf("* %d pages", total_pages);
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printf("* %d bytes per page", page_size);
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while (!button_read_device()) {};
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/* Now for fun, scan the raw pages for 'TAG' and display the contents */
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row = 0;
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while (row < TOTAL_PAGES)
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while (row < total_pages)
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{
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bool found = false;
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unsigned char* buf_ptr = (unsigned char*)page_buf;
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line = 0;
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if (row % pages_per_mb == 0) printf("%dMb", row/pages_per_mb);
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/* Read a page from chip 0 */
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nand_read(0, row, 0, PAGE_SIZE);
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nand_read(0, row, 0, page_size);
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if (row % 512 == 0) printf("%dMb", row/512);
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for (j = 0; j < PAGE_SIZE; j++)
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for (j = 0; j < page_size; j++)
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{
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if (buf_ptr[j] == 'T' && buf_ptr[j+1] == 'A' && buf_ptr[j+2] == 'G')
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found = true;
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@ -320,7 +300,7 @@ static void nand_test(void)
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printf("Row %d:", row);
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/* Copy ascii-readable parts out to a string */
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for (i = 0; i < PAGE_SIZE; i++)
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for (i = 0; i < page_size; i++)
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{
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str_buf[i] = ' ';
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if (buf_ptr[i] > 31 && buf_ptr[i] < 128)
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@ -347,7 +327,8 @@ static void nand_test(void)
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/* Alternate hex display code
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for (i = 0; i<112; i+=4)
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{
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printf("0x%08x 0x%08x 0x%08x 0x%08x",buf[i],buf[i+1],buf[i+2],buf[i+3]);
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printf("0x%08x 0x%08x 0x%08x 0x%08x",
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page_buf[i],page_buf[i+1],page_buf[i+2],page_buf[i+3]);
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}
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*/
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@ -358,7 +339,101 @@ static void nand_test(void)
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row++;
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}
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}
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#endif
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static void nand_get_chip_info(void)
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{
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bool found = false;
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unsigned char manuf_id;
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unsigned char id_buf[5];
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/* Read chip id from bank 0 */
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nand_read_id(0, id_buf);
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manuf_id = id_buf[0];
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switch (manuf_id)
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{
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case 0xEC: /* SAMSUNG */
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switch(id_buf[1]) /* Chip Id */
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{
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case 0xD5: /* K9LAG08UOM */
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page_size = 2048;
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spare_size = 64;
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pages_per_block = 128;
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total_blocks = 8192;
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col_cycles = 2;
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row_cycles = 3;
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found = true;
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break;
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case 0xD7: /* K9LBG08UOM */
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page_size = 4096;
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spare_size = 128;
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pages_per_block = 128;
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total_blocks = 8192;
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col_cycles = 2;
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row_cycles = 3;
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found = true;
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break;
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}
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break;
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}
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if (!found)
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{
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panicf("Unknown NAND: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x",
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id_buf[0],id_buf[1],id_buf[2],id_buf[3],id_buf[4]);
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}
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total_pages = total_blocks * pages_per_block;
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/* Establish how many banks are present */
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nand_read_id(1, id_buf);
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if (id_buf[0] == manuf_id)
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{
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/* Bank 1 is populated, now check if banks 2/3 are valid */
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nand_read_id(2, id_buf);
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if (id_buf[0] == manuf_id)
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{
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/* Bank 2 returned matching id - check if 2/3 are shadowing 0/1 */
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unsigned int uid_buf0[8];
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unsigned int uid_buf2[8];
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nand_read_uid(0, uid_buf0);
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nand_read_uid(2, uid_buf2);
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if (memcmp(uid_buf0, uid_buf2, 32) == 0)
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{
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/* UIDs match, assume banks 2/3 are shadowing 0/1 */
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total_banks = 2;
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}
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else
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{
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/* UIDs differ, assume banks 2/3 are valid */
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total_banks = 4;
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}
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}
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else
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{
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/* Bank 2 returned differing id - assume 2/3 are junk */
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total_banks = 2;
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}
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}
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else
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{
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/* Bank 1 returned differing id - assume it is junk */
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total_banks = 1;
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}
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}
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/* API Functions */
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@ -425,22 +500,24 @@ int ata_soft_reset(void)
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void ata_enable(bool on)
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{
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#warning function not implemented
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/* null - flash controller is enabled/disabled as needed. */
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(void)on;
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}
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int ata_init(void)
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{
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#warning function not implemented
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if (!initialized)
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{
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/* Get chip characteristics and number of banks */
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nand_get_chip_info();
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/* This needs to:
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a) establish how many banks are present
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(using nand_read_id() and nand_read_uid() above)
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b) scan all banks for bad blocks
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c) use this info to build a physical->logical address translation
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(using an as yet unknown scheme)
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*/
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/* TODO: Scan all banks for bad blocks */
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/* TODO: Build physical->logical address translation */
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initialized = true;
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}
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/* TEMP - print out some diagnostics */
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nand_test();
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