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-rw-r--r--arch/sandbox/cpu/os.c2
-rw-r--r--arch/sandbox/cpu/start.c17
-rw-r--r--arch/sandbox/include/asm/config.h8
-rw-r--r--arch/sandbox/include/asm/getopt.h23
-rw-r--r--arch/sandbox/include/asm/sections.h4
-rw-r--r--arch/sandbox/include/asm/spi.h58
-rw-r--r--arch/sandbox/include/asm/state.h9
7 files changed, 99 insertions, 22 deletions
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index db66fd3..26f44cb 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -161,7 +161,7 @@ static struct option *long_opts;
int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
{
- struct sb_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
+ struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
size_t num_options = __u_boot_sandbox_option_count();
size_t i;
diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c
index f1cb793..1b15454 100644
--- a/arch/sandbox/cpu/start.c
+++ b/arch/sandbox/cpu/start.c
@@ -13,7 +13,7 @@
int sandbox_early_getopt_check(void)
{
struct sandbox_state *state = state_get_current();
- struct sb_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
+ struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
size_t num_options = __u_boot_sandbox_option_count();
size_t i;
int max_arg_len, max_noarg_len;
@@ -40,7 +40,7 @@ int sandbox_early_getopt_check(void)
max_noarg_len = max_arg_len + 7;
for (i = 0; i < num_options; ++i) {
- struct sb_cmdline_option *opt = sb_opt[i];
+ struct sandbox_cmdline_option *opt = sb_opt[i];
/* first output the short flag if it has one */
if (opt->flag_short >= 0x100)
@@ -61,12 +61,12 @@ int sandbox_early_getopt_check(void)
os_exit(0);
}
-static int sb_cmdline_cb_help(struct sandbox_state *state, const char *arg)
+static int sandbox_cmdline_cb_help(struct sandbox_state *state, const char *arg)
{
/* just flag to sandbox_early_getopt_check to show usage */
return 1;
}
-SB_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help");
+SANDBOX_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help");
int sandbox_main_loop_init(void)
{
@@ -81,19 +81,20 @@ int sandbox_main_loop_init(void)
return 0;
}
-static int sb_cmdline_cb_command(struct sandbox_state *state, const char *arg)
+static int sandbox_cmdline_cb_command(struct sandbox_state *state,
+ const char *arg)
{
state->cmd = arg;
return 0;
}
-SB_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
+SANDBOX_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
-static int sb_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
+static int sandbox_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
{
state->fdt_fname = arg;
return 0;
}
-SB_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
+SANDBOX_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
int main(int argc, char *argv[])
{
diff --git a/arch/sandbox/include/asm/config.h b/arch/sandbox/include/asm/config.h
index 7755a4d..ec7729e 100644
--- a/arch/sandbox/include/asm/config.h
+++ b/arch/sandbox/include/asm/config.h
@@ -9,4 +9,12 @@
#define CONFIG_SANDBOX_ARCH
+/* Used by drivers/spi/sandbox_spi.c and arch/sandbox/include/asm/state.h */
+#ifndef CONFIG_SANDBOX_SPI_MAX_BUS
+#define CONFIG_SANDBOX_SPI_MAX_BUS 1
+#endif
+#ifndef CONFIG_SANDBOX_SPI_MAX_CS
+#define CONFIG_SANDBOX_SPI_MAX_CS 10
+#endif
+
#endif
diff --git a/arch/sandbox/include/asm/getopt.h b/arch/sandbox/include/asm/getopt.h
index 685883c..3048c2c 100644
--- a/arch/sandbox/include/asm/getopt.h
+++ b/arch/sandbox/include/asm/getopt.h
@@ -18,7 +18,7 @@ struct sandbox_state;
* consumer code should focus on the macros below and
* the callback function.
*/
-struct sb_cmdline_option {
+struct sandbox_cmdline_option {
/* The long flag name: "help" for "--help" */
const char *flag;
/* The (optional) short flag name: "h" for "-h" */
@@ -35,18 +35,19 @@ struct sb_cmdline_option {
* Internal macro to expand the lower macros into the necessary
* magic junk that makes this all work.
*/
-#define _SB_CMDLINE_OPT(f, s, ha, h) \
- static struct sb_cmdline_option sb_cmdline_option_##f = { \
+#define _SANDBOX_CMDLINE_OPT(f, s, ha, h) \
+ static struct sandbox_cmdline_option sandbox_cmdline_option_##f = { \
.flag = #f, \
.flag_short = s, \
.help = h, \
.has_arg = ha, \
- .callback = sb_cmdline_cb_##f, \
+ .callback = sandbox_cmdline_cb_##f, \
}; \
/* Ppointer to the struct in a special section for the linker script */ \
static __attribute__((section(".u_boot_sandbox_getopt"), used)) \
- struct sb_cmdline_option *sb_cmdline_option_##f##_ptr = \
- &sb_cmdline_option_##f
+ struct sandbox_cmdline_option \
+ *sandbox_cmdline_option_##f##_ptr = \
+ &sandbox_cmdline_option_##f
/**
* Macros for end code to declare new command line flags.
@@ -56,16 +57,16 @@ struct sb_cmdline_option {
* @param h The help string displayed when showing --help
*
* This invocation:
- * SB_CMDLINE_OPT(foo, 0, "The foo arg");
+ * SANDBOX_CMDLINE_OPT(foo, 0, "The foo arg");
* Will create a new flag named "--foo" (no short option) that takes
* no argument. If the user specifies "--foo", then the callback func
- * sb_cmdline_cb_foo() will automatically be called.
+ * sandbox_cmdline_cb_foo() will automatically be called.
*/
-#define SB_CMDLINE_OPT(f, ha, h) _SB_CMDLINE_OPT(f, 0, ha, h)
+#define SANDBOX_CMDLINE_OPT(f, ha, h) _SANDBOX_CMDLINE_OPT(f, 0, ha, h)
/*
* Same as above, but @s is used to specify a short flag e.g.
- * SB_CMDLINE_OPT(foo, 'f', 0, "The foo arg");
+ * SANDBOX_CMDLINE_OPT(foo, 'f', 0, "The foo arg");
*/
-#define SB_CMDLINE_OPT_SHORT(f, s, ha, h) _SB_CMDLINE_OPT(f, s, ha, h)
+#define SANDBOX_CMDLINE_OPT_SHORT(f, s, ha, h) _SANDBOX_CMDLINE_OPT(f, s, ha, h)
#endif
diff --git a/arch/sandbox/include/asm/sections.h b/arch/sandbox/include/asm/sections.h
index 4c37860..fbc1bd1 100644
--- a/arch/sandbox/include/asm/sections.h
+++ b/arch/sandbox/include/asm/sections.h
@@ -11,9 +11,9 @@
#include <asm-generic/sections.h>
-struct sb_cmdline_option;
+struct sandbox_cmdline_option;
-extern struct sb_cmdline_option *__u_boot_sandbox_option_start[],
+extern struct sandbox_cmdline_option *__u_boot_sandbox_option_start[],
*__u_boot_sandbox_option_end[];
static inline size_t __u_boot_sandbox_option_count(void)
diff --git a/arch/sandbox/include/asm/spi.h b/arch/sandbox/include/asm/spi.h
new file mode 100644
index 0000000..49b4a0f
--- /dev/null
+++ b/arch/sandbox/include/asm/spi.h
@@ -0,0 +1,58 @@
+/*
+ * Simulate a SPI port and clients (see README.sandbox for details)
+ *
+ * Copyright (c) 2011-2013 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ASM_SPI_H__
+#define __ASM_SPI_H__
+
+#include <linux/types.h>
+
+/*
+ * The interface between the SPI bus and the SPI client. The bus will
+ * instantiate a client, and that then call into it via these entry
+ * points. These should be enough for the client to emulate the SPI
+ * device just like the real hardware.
+ */
+struct sandbox_spi_emu_ops {
+ /* The bus wants to instantiate a new client, so setup everything */
+ int (*setup)(void **priv, const char *spec);
+ /* The bus is done with us, so break things down */
+ void (*free)(void *priv);
+ /* The CS has been "activated" -- we won't worry about low/high */
+ void (*cs_activate)(void *priv);
+ /* The CS has been "deactivated" -- we won't worry about low/high */
+ void (*cs_deactivate)(void *priv);
+ /* The client is rx-ing bytes from the bus, so it should tx some */
+ int (*xfer)(void *priv, const u8 *rx, u8 *tx, uint bytes);
+};
+
+/*
+ * There are times when the data lines are allowed to tristate. What
+ * is actually sensed on the line depends on the hardware. It could
+ * always be 0xFF/0x00 (if there are pull ups/downs), or things could
+ * float and so we'd get garbage back. This func encapsulates that
+ * scenario so we can worry about the details here.
+ */
+static inline void sandbox_spi_tristate(u8 *buf, uint len)
+{
+ /* XXX: make this into a user config option ? */
+ memset(buf, 0xff, len);
+}
+
+/*
+ * Extract the bus/cs from the spi spec and return the start of the spi
+ * client spec. If the bus/cs are invalid for the current config, then
+ * it returns NULL.
+ *
+ * Example: arg="0:1:foo" will set bus to 0, cs to 1, and return "foo"
+ */
+const char *sandbox_spi_parse_spec(const char *arg, unsigned long *bus,
+ unsigned long *cs);
+
+#endif
diff --git a/arch/sandbox/include/asm/state.h b/arch/sandbox/include/asm/state.h
index 093c81d..a38820b 100644
--- a/arch/sandbox/include/asm/state.h
+++ b/arch/sandbox/include/asm/state.h
@@ -15,6 +15,11 @@ enum exit_type_id {
STATE_EXIT_POWER_OFF,
};
+struct sandbox_spi_info {
+ const char *spec;
+ const struct sandbox_spi_emu_ops *ops;
+};
+
/* The complete state of the test system */
struct sandbox_state {
const char *cmd; /* Command to execute */
@@ -23,6 +28,10 @@ struct sandbox_state {
const char *parse_err; /* Error to report from parsing */
int argc; /* Program arguments */
char **argv;
+
+ /* Pointer to information for each SPI bus/cs */
+ struct sandbox_spi_info spi[CONFIG_SANDBOX_SPI_MAX_BUS]
+ [CONFIG_SANDBOX_SPI_MAX_CS];
};
/**