summaryrefslogtreecommitdiff
path: root/fw/fe310/eos/dev/drv
diff options
context:
space:
mode:
Diffstat (limited to 'fw/fe310/eos/dev/drv')
-rw-r--r--fw/fe310/eos/dev/drv/flash.c162
-rw-r--r--fw/fe310/eos/dev/drv/flash.h25
2 files changed, 0 insertions, 187 deletions
diff --git a/fw/fe310/eos/dev/drv/flash.c b/fw/fe310/eos/dev/drv/flash.c
deleted file mode 100644
index 4f017b3..0000000
--- a/fw/fe310/eos/dev/drv/flash.c
+++ /dev/null
@@ -1,162 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "encoding.h"
-#include "platform.h"
-
-#include "eos.h"
-#include "soc/timer.h"
-
-#include "flash.h"
-
-#define IDLE_TICKS 10
-
-__attribute__ ((section (".itim.flash")))
-static void send(uint8_t data) {
- while (SPI0_REG(SPI_REG_TXFIFO) & SPI_TXFIFO_FULL);
- SPI0_REG(SPI_REG_TXFIFO) = data;
-}
-
-__attribute__ ((section (".itim.flash")))
-static uint8_t xfer(uint8_t data) {
- volatile uint32_t x = 0;
-
- send(data);
- while ((x = SPI0_REG(SPI_REG_RXFIFO)) & SPI_RXFIFO_EMPTY);
- return x;
-}
-
-void eos_flash_init(void) {
- SPI0_REG(SPI_REG_FMT) |= SPI_FMT_DIR(SPI_DIR_TX);
- SPI0_REG(SPI_REG_TXCTRL) = SPI_TXWM(1);
- eos_flash_norm();
-}
-
-__attribute__ ((section (".itim.flash")))
-void eos_flash_norm(void) {
- volatile uint64_t *mtime = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIME);
- uint32_t mtime0;
-
- clear_csr(mstatus, MSTATUS_MIE);
- SPI0_REG(SPI_REG_FCTRL) = 0;
-
- SPI0_REG(SPI_REG_SCKDIV) = 3;
- if (SPI0_REG(SPI_REG_FMT) & SPI_FMT_PROTO(SPI_PROTO_Q)) {
- send(EOS_FLASH_QPIDI);
- while (!(SPI0_REG(SPI_REG_IP) & SPI_IP_TXWM));
- }
-
- SPI0_REG(SPI_REG_FMT) = \
- SPI_FMT_PROTO(SPI_PROTO_S) |
- SPI_FMT_ENDIAN(SPI_ENDIAN_MSB) |
- SPI_FMT_DIR(SPI_DIR_TX) |
- SPI_FMT_LEN(8);
-
- SPI0_REG(SPI_REG_FFMT) =
- SPI_INSN_CMD_EN |
- SPI_INSN_ADDR_LEN(3) |
- SPI_INSN_PAD_CNT(0) |
- SPI_INSN_CMD_PROTO(SPI_PROTO_S) |
- SPI_INSN_ADDR_PROTO(SPI_PROTO_S) |
- SPI_INSN_DATA_PROTO(SPI_PROTO_S) |
- SPI_INSN_CMD_CODE(EOS_FLASH_NORD) |
- SPI_INSN_PAD_CODE(0x00);
-
- mtime0 = *mtime;
- while ((*mtime - mtime0) < IDLE_TICKS);
-
- SPI0_REG(SPI_REG_FCTRL) = SPI_FCTRL_EN;
- set_csr(mstatus, MSTATUS_MIE);
-}
-
-__attribute__ ((section (".itim.flash")))
-void eos_flash_fast(void) {
- volatile uint64_t *mtime = (uint64_t *) (CLINT_CTRL_ADDR + CLINT_MTIME);
- uint32_t mtime0;
-
- clear_csr(mstatus, MSTATUS_MIE);
- SPI0_REG(SPI_REG_FCTRL) = 0;
-
- SPI0_REG(SPI_REG_SCKDIV) = 2;
- if (!(SPI0_REG(SPI_REG_FMT) & SPI_FMT_PROTO(SPI_PROTO_Q))) {
- send(EOS_FLASH_QPIEN);
- while (!(SPI0_REG(SPI_REG_IP) & SPI_IP_TXWM));
- }
-
- SPI0_REG(SPI_REG_FMT) = \
- SPI_FMT_PROTO(SPI_PROTO_Q) |
- SPI_FMT_ENDIAN(SPI_ENDIAN_MSB) |
- SPI_FMT_DIR(SPI_DIR_TX) |
- SPI_FMT_LEN(8);
-
- SPI0_REG(SPI_REG_FFMT) =
- SPI_INSN_CMD_EN |
- SPI_INSN_ADDR_LEN(3) |
- SPI_INSN_PAD_CNT(6) |
- SPI_INSN_CMD_PROTO(SPI_PROTO_Q) |
- SPI_INSN_ADDR_PROTO(SPI_PROTO_Q) |
- SPI_INSN_DATA_PROTO(SPI_PROTO_Q) |
- SPI_INSN_CMD_CODE(EOS_FLASH_FRD) |
- SPI_INSN_PAD_CODE(0x00);
-
- mtime0 = *mtime;
- while ((*mtime - mtime0) < IDLE_TICKS);
-
- SPI0_REG(SPI_REG_FCTRL) = SPI_FCTRL_EN;
- set_csr(mstatus, MSTATUS_MIE);
-}
-
-__attribute__ ((section (".itim.flash")))
-void eos_flash_wip(void) {
- uint8_t status;
-
- do {
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_HOLD;
- xfer(EOS_FLASH_RDSR);
- status = xfer(0);
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
- } while (status & EOS_FLASH_WIP);
-}
-
-__attribute__ ((section (".itim.flash")))
-void eos_flash_wren(void) {
- uint8_t status;
-
- xfer(EOS_FLASH_WREN);
-#if 0
- do {
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_HOLD;
- xfer(EOS_FLASH_RDSR);
- status = xfer(0);
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
- } while (!(status & EOS_FLASH_WEL));
-#endif
-}
-
-__attribute__ ((section (".itim.flash")))
-void eos_flash_ser(uint32_t addr) {
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_HOLD;
- xfer(EOS_FLASH_SER);
- xfer(addr >> 16);
- xfer(addr >> 8);
- xfer(addr);
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
-}
-
-__attribute__ ((section (".itim.flash")))
-void eos_flash_pp(uint32_t addr, uint8_t *buf) {
- int i;
-
- SPI0_REG(SPI_REG_FMT) |= SPI_FMT_DIR(SPI_DIR_TX);
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_HOLD;
- send(EOS_FLASH_PP);
- send(addr >> 16);
- send(addr >> 8);
- send(addr);
- for (i=0; i<256; i++) {
- send(buf[i]);
- }
- while (!(SPI0_REG(SPI_REG_IP) & SPI_IP_TXWM));
- SPI0_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
- SPI0_REG(SPI_REG_FMT) &= ~SPI_FMT_DIR(SPI_DIR_TX);
-}
diff --git a/fw/fe310/eos/dev/drv/flash.h b/fw/fe310/eos/dev/drv/flash.h
deleted file mode 100644
index 6f792cb..0000000
--- a/fw/fe310/eos/dev/drv/flash.h
+++ /dev/null
@@ -1,25 +0,0 @@
-#include <stdint.h>
-
-#define EOS_FLASH_RDSR 0x05
-
-#define EOS_FLASH_NORD 0x03
-#define EOS_FLASH_FRD 0x0b
-
-#define EOS_FLASH_WREN 0x06
-#define EOS_FLASH_SER 0x20
-#define EOS_FLASH_PP 0x02
-
-#define EOS_FLASH_QPIEN 0x35
-#define EOS_FLASH_QPIDI 0xF5
-
-#define EOS_FLASH_WIP 0x01
-#define EOS_FLASH_WEL 0x02
-
-void eos_flash_init(void);
-void eos_flash_norm(void);
-void eos_flash_fast(void);
-
-void eos_flash_wip(void);
-void eos_flash_wren(void);
-void eos_flash_ser(uint32_t addr);
-void eos_flash_pp(uint32_t addr, uint8_t *buf); \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-23 11:04:54 +0000