abagu
5 years ago
8 changed files with 439 additions and 41 deletions
@ -0,0 +1,133 @@ |
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/* vim: set ts=4 et sw=4:
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* @file nor.c |
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* |
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* @brief The nor boot driver |
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*/ |
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#include "types.h" |
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#include "vsky/libdsp/inc/elfloader.h" |
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#include <vsky/libdsp/fs/vsky_yaffs2.h> |
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#include <vsky/libdsp/inc/nand.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <stdlib.h> |
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/**
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* @brief The nor master control block which tracks the current nor boot information |
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*/ |
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typedef struct nandmcb_s { |
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uint32 fpos; /**< Current file position. This is an absolute address, not relative to startPos */ |
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uint32 startPos; /**< Initial file position */ |
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int fd; |
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} nandmcb_t; |
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static nandmcb_t nmcb; |
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/**
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* @brief |
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* Set the current file position |
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*/ |
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static Int32 __yaffs_seek (Int32 loc, Int32 from) |
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{ |
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/* Can't seek from the end of the file, since the end is not known */ |
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if (from == 0) |
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nmcb.fpos = nmcb.startPos + loc; |
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else if (from == 1) |
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nmcb.fpos += loc; |
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else |
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return (-1); |
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if (nmcb.fpos < nmcb.startPos) |
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nmcb.fpos = nmcb.startPos; |
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return (0); |
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} |
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/**
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* @brief |
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* Initialize the control structure. Note that the interface value was |
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* previously verified in the top level nor boot control. |
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*/ |
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static Int32 __yaffs_open (void *ptr_driver, void (*asyncComplete)(void *)) |
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{ |
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const char *name = ptr_driver; |
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nmcb.fd = yaffs_open(name, O_RDONLY, S_IREAD); |
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if (nmcb.fd < 0) { |
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printf("cant open %s to parse\r\n", name); |
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return -1; |
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} |
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nmcb.startPos = 0; |
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nmcb.fpos = 0; |
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return 0; |
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} |
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/**
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* @brief |
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* Read data from the current address. This function is used |
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* for peek as well as read. |
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*/ |
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static Int32 __yaffs_read (Uint8 *ptr_buf, Uint32 num_bytes) |
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{ |
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int nr; |
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if (nmcb.fd < 0) |
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return (-1); |
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yaffs_lseek(nmcb.fd, nmcb.fpos, SEEK_SET); |
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nr = yaffs_read(nmcb.fd, ptr_buf, num_bytes); |
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nmcb.fpos += nr; |
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return 0; |
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} |
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static Int32 __yaffs_peek(Uint8 *ptr_buf, Uint32 num) |
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{ |
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Uint32 pos = nmcb.fpos; |
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int r = yaffs_read(nmcb.fd, ptr_buf, num); |
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nmcb.fpos = pos; |
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return (r); |
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} |
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/**
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* @brief |
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* Return the number of bytes available for current read. |
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* Always return 1k |
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*/ |
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static Int32 __yaffs_query (void) |
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{ |
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return 0x400; |
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} |
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/**
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* @brief |
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* Close the nor driver |
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*/ |
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static Int32 __yaffs_close (void) |
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{ |
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yaffs_close(nmcb.fd); |
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return (0); |
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} |
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/**
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* @brief |
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* The global nor module function table |
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*/ |
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static BOOT_MODULE_FXN_TABLE __boot_module = { |
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__yaffs_open, /* Open API */ |
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__yaffs_close, /* Close API */ |
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__yaffs_read, /* Read API */ |
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NULL, /* Write API */ |
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__yaffs_peek, /* Peek API */ |
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__yaffs_seek, /* Seek API */ |
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__yaffs_query /* Query API */ |
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}; |
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unsigned int yaffs_load_elf(const char *file) |
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{ |
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unsigned int entry = 0; |
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if (__boot_module.open((void *)file, NULL)) { |
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return 0; |
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} |
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load_elf(&__boot_module, &entry); |
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__boot_module.close(); |
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return entry; |
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} |
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@ -1,34 +1,34 @@ |
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-c -heap 0x100000 -stack 0x4000 |
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-c -heap 0x8000000 -stack 0x2000000 |
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/* Memory Map */ |
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MEMORY { |
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L1PSRAM (RWX) : org = 0x0E00000, len = 0x7FFF |
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L1DSRAM (RWX) : org = 0x0F00000, len = 0x7FFF |
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L2SRAM (RWX) : org = 0x0800000, len = 0x080000 |
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MSMCSRAM (RWX) : org = 0xc000000, len = 0x200000 |
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DDR3 (RWX) : org = 0x80000000,len = 0x40000000 |
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MSMCSRAM (RWX) : org = 0xc000000, len = 0x400000 |
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DDR3 (RWX) : org = 0x80000000,len = 0x10000000 |
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} |
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SECTIONS { |
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.sysmem > MSMCSRAM |
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.csl_vect > MSMCSRAM |
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.text > MSMCSRAM |
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.sysmem > DDR3 |
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.csl_vect > DDR3 |
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.text > DDR3 |
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GROUP (NEAR_DP) |
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{ |
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.neardata |
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.rodata |
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.bss |
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} load > MSMCSRAM |
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} load > DDR3 |
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.stack > MSMCSRAM |
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.cinit > MSMCSRAM |
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.cio > MSMCSRAM |
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.const > MSMCSRAM |
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.data > MSMCSRAM |
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.switch > MSMCSRAM |
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.far > MSMCSRAM |
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.testMem > MSMCSRAM |
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.fardata > MSMCSRAM |
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.init_array > MSMCSRAM |
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.serial_buffer > MSMCSRAM |
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.stack > DDR3 |
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.cinit > DDR3 |
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.cio > DDR3 |
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.const > DDR3 |
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.data > DDR3 |
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.switch > DDR3 |
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.far > DDR3 |
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.testMem > DDR3 |
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.fardata > DDR3 |
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.init_array > DDR3 |
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.serial_buffer > DDR3 |
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} |
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