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148 lines
3.4 KiB
C
148 lines
3.4 KiB
C
#define GPIO_FUNC_SEL0 0x80000018 /* GPIO 15 - 0; 2 bit blocks */
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#define BASE_UART1 0x80005000
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#define UART1_CON 0x80005000
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#define UART1_STAT 0x80005004
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#define UART1_DATA 0x80005008
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#define UR1CON 0x8000500c
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#define UT1CON 0x80005010
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#define UART1_CTS 0x80005014
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#define UART1_BR 0x80005018
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#define GPIO_PAD_DIR0 0x80000000
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#define GPIO_DATA0 0x80000008
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#include "embedded_types.h"
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#include "nvm.h"
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#include "maca.h"
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#define reg(x) (*(volatile uint32_t *)(x))
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#define DELAY 400000
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void putc(uint8_t c);
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void puts(uint8_t *s);
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void put_hex(uint8_t x);
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void put_hex16(uint16_t x);
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void put_hex32(uint32_t x);
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const uint8_t hex[16]={'0','1','2','3','4','5','6','7',
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'8','9','a','b','c','d','e','f'};
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#include "isr.h"
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#define NBYTES 8
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#define WRITE_ADDR 0x1e000
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//#define WRITE_ADDR 0x0
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#define WRITEVAL0 0x00000004
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#define WRITEVAL1 0x00000000
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__attribute__ ((section ("startup")))
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void main(void) {
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nvmType_t type=0;
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nvmErr_t err;
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uint32_t buf[NBYTES/4];
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uint32_t i;
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*(volatile uint32_t *)GPIO_PAD_DIR0 = 0x00000100;
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/* Restore UART regs. to default */
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/* in case there is still bootloader state leftover */
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reg(UART1_CON) = 0x0000c800; /* mask interrupts, 16 bit sample --- helps explain the baud rate */
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/* INC = 767; MOD = 9999 works: 115200 @ 24 MHz 16 bit sample */
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#define INC 767
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#define MOD 9999
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reg(UART1_BR) = INC<<16 | MOD;
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/* see Section 11.5.1.2 Alternate Modes */
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/* you must enable the peripheral first BEFORE setting the function in GPIO_FUNC_SEL */
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/* From the datasheet: "The peripheral function will control operation of the pad IF */
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/* THE PERIPHERAL IS ENABLED. */
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reg(UART1_CON) = 0x00000003; /* enable receive and transmit */
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reg(GPIO_FUNC_SEL0) = ( (0x01 << (14*2)) | (0x01 << (15*2)) ); /* set GPIO15-14 to UART (UART1 TX and RX)*/
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vreg_init();
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// puts("CRM status: 0x");
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// put_hex32(reg(0x80003018));
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// puts("\n\r");
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puts("Detecting internal nvm\n\r");
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err = nvm_detect(gNvmInternalInterface_c, &type);
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puts("nvm_detect returned: 0x");
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put_hex(err);
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puts(" type is: 0x");
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put_hex32(type);
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puts("\n\r");
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buf[0] = WRITEVAL0;
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buf[1] = WRITEVAL1;
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err = nvm_erase(gNvmInternalInterface_c, type, 0x40000000); /* erase sector 30 --- sector 31 is the 'secret zone' */
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puts("nvm_erase returned: 0x");
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put_hex(err);
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puts("\n\r");
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err = nvm_write(gNvmInternalInterface_c, type, (uint8_t *)buf, WRITE_ADDR, NBYTES);
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puts("nvm_write returned: 0x");
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put_hex(err);
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puts("\n\r");
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puts("writing\n\r");
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for(i=0; i<NBYTES/4; i++) {
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puts("0x");
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put_hex32(buf[i]);
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puts("\n\r");
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buf[i] = 0x00000000; /* clear buf for the read */
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}
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err = nvm_read(gNvmInternalInterface_c, type, (uint8_t *)buf, WRITE_ADDR, NBYTES);
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puts("nvm_read returned: 0x");
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put_hex(err);
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puts("\n\r");
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puts("reading\n\r");
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for(i=0; i<NBYTES/4; i++) {
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puts("0x");
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put_hex32(buf[i]);
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puts("\n\r");
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}
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while(1) {continue;};
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}
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void putc(uint8_t c) {
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while(reg(UT1CON)==31); /* wait for there to be room in the buffer */
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reg(UART1_DATA) = c;
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}
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void puts(uint8_t *s) {
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while(s && *s!=0) {
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putc(*s++);
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}
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}
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void put_hex(uint8_t x)
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{
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putc(hex[x >> 4]);
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putc(hex[x & 15]);
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}
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void put_hex16(uint16_t x)
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{
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put_hex((x >> 8) & 0xFF);
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put_hex((x) & 0xFF);
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}
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void put_hex32(uint32_t x)
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{
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put_hex((x >> 24) & 0xFF);
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put_hex((x >> 16) & 0xFF);
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put_hex((x >> 8) & 0xFF);
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put_hex((x) & 0xFF);
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}
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