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arm: mvebu: turris_mox: Cosmetic restructurization

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Restructure the board initialization source.
Remove the module_topology environment variable since it won't be
needed.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Marek Behún 2018-12-17 16:10:01 +01:00 committed by Stefan Roese
parent 30c4383da3
commit 296c64ea41
1 changed files with 96 additions and 54 deletions
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150
board/CZ.NIC/turris_mox/turris_mox.c
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@ -135,17 +135,15 @@ int board_init(void)
return 0;
}
int last_stage_init(void)
static int mox_do_spi(u8 *in, u8 *out, size_t size)
{
struct spi_slave *slave;
struct udevice *dev;
u8 din[10], dout[10];
int ret, i;
size_t len = 0;
char module_topology[128];
int ret;
ret = spi_get_bus_and_cs(0, 1, 20000000, SPI_CPHA, "spi_generic_drv",
"mox-modules@1", &dev, &slave);
ret = spi_get_bus_and_cs(0, 1, 1000000, SPI_CPHA | SPI_CPOL,
"spi_generic_drv", "moxtet@1", &dev,
&slave);
if (ret)
goto fail;
@ -153,57 +151,101 @@ int last_stage_init(void)
if (ret)
goto fail_free;
memset(din, 0, 10);
memset(dout, 0, 10);
ret = spi_xfer(slave, size * 8, out, in, SPI_XFER_ONCE);
ret = spi_xfer(slave, 80, dout, din, SPI_XFER_ONCE);
if (ret)
goto fail_release;
if (din[0] != 0x00 && din[0] != 0xff)
goto fail_release;
printf("Module Topology:\n");
for (i = 1; i < 10 && din[i] != 0xff; ++i) {
u8 mid = din[i] & 0xf;
size_t mlen;
const char *mname = "";
switch (mid) {
case 0x1:
mname = "sfp-";
printf("% 4i: SFP Module\n", i);
break;
case 0x2:
mname = "pci-";
printf("% 4i: Mini-PCIe Module\n", i);
break;
case 0x3:
mname = "topaz-";
printf("% 4i: Topaz Switch Module\n", i);
break;
default:
printf("% 4i: unknown (ID %i)\n", i, mid);
}
mlen = strlen(mname);
if (len + mlen < sizeof(module_topology)) {
strcpy(module_topology + len, mname);
len += mlen;
}
}
printf("\n");
module_topology[len > 0 ? len - 1 : 0] = '\0';
env_set("module_topology", module_topology);
fail_release:
spi_release_bus(slave);
fail_free:
spi_free_slave(slave);
fail:
if (ret)
printf("Cannot read module topology!\n");
return ret;
}
static int mox_get_topology(const u8 **ptopology, int *psize, int *pis_sd)
{
static int is_sd;
static u8 topology[MAX_MOX_MODULES - 1];
static int size;
u8 din[MAX_MOX_MODULES], dout[MAX_MOX_MODULES];
int ret, i;
if (size) {
if (ptopology)
*ptopology = topology;
if (psize)
*psize = size;
if (pis_sd)
*pis_sd = is_sd;
return 0;
}
memset(din, 0, MAX_MOX_MODULES);
memset(dout, 0, MAX_MOX_MODULES);
ret = mox_do_spi(din, dout, MAX_MOX_MODULES);
if (ret)
return ret;
if (din[0] == 0x10)
is_sd = 1;
else if (din[0] == 0x00)
is_sd = 0;
else
return -ENODEV;
for (i = 1; i < MAX_MOX_MODULES && din[i] != 0xff; ++i)
topology[i - 1] = din[i] & 0xf;
size = i - 1;
if (ptopology)
*ptopology = topology;
if (psize)
*psize = size;
if (pis_sd)
*pis_sd = is_sd;
return 0;
}
int last_stage_init(void)
{
int ret, i;
const u8 *topology;
int module_count, is_sd;
ret = mox_get_topology(&topology, &module_count, &is_sd);
if (ret) {
printf("Cannot read module topology!\n");
return 0;
}
printf("Found Turris Mox %s version\n", is_sd ? "SD" : "eMMC");
printf("Module Topology:\n");
for (i = 0; i < module_count; ++i) {
switch (topology[i]) {
case MOX_MODULE_SFP:
printf("% 4i: SFP Module\n", i + 1);
break;
case MOX_MODULE_PCI:
printf("% 4i: Mini-PCIe Module\n", i + 1);
break;
case MOX_MODULE_TOPAZ:
printf("% 4i: Topaz Switch Module (4-port)\n", i + 1);
break;
case MOX_MODULE_PERIDOT:
printf("% 4i: Peridot Switch Module (8-port)\n", i + 1);
break;
case MOX_MODULE_USB3:
printf("% 4i: USB 3.0 Module (4 ports)\n", i + 1);
break;
case MOX_MODULE_PASSPCI:
printf("% 4i: Passthrough Mini-PCIe Module\n", i + 1);
break;
default:
printf("% 4i: unknown (ID %i)\n", i + 1, topology[i]);
}
}
printf("\n");
return 0;
}